Merge branch 'master' of https://github.com/asciimoo/searx into csp-oscar-theme

38 files changed, 831 insertions, 290 deletions

diff --git a/Makefile b/Makefile
index 2bba32328..2f10c62bc 100644
--- a/Makefile
+++ b/Makefile
@@ -223,6 +223,7 @@ test.pylint: pyenvinstall
 	$(call cmd,pylint,\
 		searx/preferences.py \
 		searx/testing.py \
+		searx/engines/gigablast.py \
 	)
 endif
 
@@ -243,7 +244,7 @@ test.sh:
 
 test.pep8: pyenvinstall
 	@echo "TEST      pep8"
-	$(Q)$(PY_ENV_ACT); pep8 --exclude=searx/static --max-line-length=120 --ignore "E402,W503" searx tests
+	$(Q)$(PY_ENV_ACT); pep8 --exclude='searx/static, searx/engines/gigablast.py' --max-line-length=120 --ignore "E402,W503" searx tests
 
 test.unit: pyenvinstall
 	@echo "TEST      tests/unit"
diff --git a/README.rst b/README.rst
index a7b75d6e2..55deb674e 100644
--- a/README.rst
+++ b/README.rst
@@ -1,63 +1,73 @@
-searx
-=====
+.. SPDX-License-Identifier: AGPL-3.0-or-later
+
+.. figure:: https://raw.githubusercontent.com/asciimoo/searx/master/searx/static/themes/oscar/img/logo_searx_a.png
+   :target: https://asciimoo.github.io/searx/
+   :alt: searX
+   :width: 100%
+   :align: center
+
+-------
+
+|searx install|
+|searx homepage|
+|searx wiki|
+|AGPL License|
+|Issues|
+|commits|
+|OpenCollective searx backers|
+|OpenCollective searx sponsors|
 
-A privacy-respecting, hackable `metasearch
-engine <https://en.wikipedia.org/wiki/Metasearch_engine>`__.
+Privacy-respecting, hackable `metasearch engine`_ / *pronunciation* **səːks**.
 
-Pronunciation: səːks
+.. _metasearch engine: https://en.wikipedia.org/wiki/Metasearch_engine
 
-List of `running
-instances <https://searx.space/>`__.
+.. |searx install| image:: https://img.shields.io/badge/-install-blue
+   :target: https://asciimoo.github.io/searx/admin/installation.html
 
-See the `documentation <https://asciimoo.github.io/searx>`__ and the `wiki <https://github.com/asciimoo/searx/wiki>`__ for more information.
+.. |searx homepage| image:: https://img.shields.io/badge/-homepage-blue
+   :target: https://asciimoo.github.io/searx
 
-|OpenCollective searx backers|
-|OpenCollective searx sponsors|
+.. |searx wiki| image:: https://img.shields.io/badge/-wiki-blue
+   :target: https://github.com/asciimoo/searx/wiki
 
-Installation
-~~~~~~~~~~~~
+.. |AGPL License|  image:: https://img.shields.io/badge/license-AGPL-blue.svg
+   :target: https://github.com/asciimoo/searx/blob/master/LICENSE
 
-With Docker
------------
-Go to the `searx-docker <https://github.com/searx/searx-docker>`__ project.
+.. |Issues| image:: https://img.shields.io/github/issues/asciimoo/searx?color=yellow&label=issues
+   :target: https://github.com/asciimoo/searx/issues
 
-Without Docker
---------------
-For all of the details, follow this `step by step installation <https://asciimoo.github.io/searx/admin/installation.html>`__.
+.. |PR| image:: https://img.shields.io/github/issues-pr-raw/asciimoo/searx?color=yellow&label=PR
+   :target: https://github.com/asciimoo/searx/pulls
 
-Note: the documentation needs to be updated.
+.. |commits| image:: https://img.shields.io/github/commit-activity/y/asciimoo/searx?color=yellow&label=commits
+   :target: https://github.com/asciimoo/searx/commits/master
 
-If you are in a hurry
----------------------
--  clone the source:
-   ``git clone https://github.com/asciimoo/searx.git && cd searx``
--  install dependencies: ``./manage.sh update_packages``
--  edit your
-   `settings.yml <https://github.com/asciimoo/searx/blob/master/searx/settings.yml>`__
-   (set your ``secret_key``!)
--  run ``python searx/webapp.py`` to start the application
+.. |OpenCollective searx backers| image:: https://opencollective.com/searx/backers/badge.svg
+   :target: https://opencollective.com/searx#backer
 
+.. |OpenCollective searx sponsors| image:: https://opencollective.com/searx/sponsors/badge.svg
+   :target: https://opencollective.com/searx#sponsor
 
-Bugs
-~~~~
 
-Bugs or suggestions? Visit the `issue
-tracker <https://github.com/asciimoo/searx/issues>`__.
+If you are looking for running instances, ready to use, then visit searx.space_.
 
-`License <https://github.com/asciimoo/searx/blob/master/LICENSE>`__
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Otherwise jump to the user_, admin_ and developer_ handbooks you will find on
+our homepage_.
 
-More about searx
-~~~~~~~~~~~~~~~~
+.. _searx.space: https://searx.space
+.. _user: https://asciimoo.github.io/searx/user
+.. _admin: https://asciimoo.github.io/searx/admin
+.. _developer: https://asciimoo.github.io/searx/dev
+.. _homepage: https://asciimoo.github.io/searx
 
--  `openhub <https://www.openhub.net/p/searx/>`__
--  `twitter <https://twitter.com/Searx_engine>`__
--  IRC: #searx @ freenode
+contact:
+  openhub_ // twitter_ // IRC: #searx @ freenode
 
+.. _openhub: https://www.openhub.net/p/searx
+.. _twitter: https://twitter.com/Searx_engine
 
-.. |OpenCollective searx backers| image:: https://opencollective.com/searx/backers/badge.svg
-   :target: https://opencollective.com/searx#backer
+-------
 
+|gluten free|
 
-.. |OpenCollective searx sponsors| image:: https://opencollective.com/searx/sponsors/badge.svg
-   :target: https://opencollective.com/searx#sponsor
+.. |gluten free| image:: https://forthebadge.com/images/featured/featured-gluten-free.svg
diff --git a/docs/admin/installation-uwsgi.rst b/docs/admin/installation-uwsgi.rst
index ac4c463b9..7b482975d 100644
--- a/docs/admin/installation-uwsgi.rst
+++ b/docs/admin/installation-uwsgi.rst
@@ -108,6 +108,7 @@ restart the uwsgi application.
          :start-after: START searx uwsgi-description ubuntu-20.04
          :end-before: END searx uwsgi-description ubuntu-20.04
 
+   .. hotfix: a bug group-tab need this comment
 
    .. group-tab:: Arch Linux
 
@@ -115,6 +116,7 @@ restart the uwsgi application.
          :start-after: START searx uwsgi-description arch
          :end-before: END searx uwsgi-description arch
 
+   .. hotfix: a bug group-tab need this comment
 
    .. group-tab::  Fedora / RHEL
 
@@ -128,22 +130,21 @@ restart the uwsgi application.
    .. group-tab:: Ubuntu / debian
 
       .. kernel-include:: $DOCS_BUILD/includes/searx.rst
-         :code: ini
          :start-after: START searx uwsgi-appini ubuntu-20.04
          :end-before: END searx uwsgi-appini ubuntu-20.04
 
+   .. hotfix: a bug group-tab need this comment
+
    .. group-tab:: Arch Linux
 
       .. kernel-include:: $DOCS_BUILD/includes/searx.rst
-         :code: ini
          :start-after: START searx uwsgi-appini arch
          :end-before: END searx uwsgi-appini arch
 
+   .. hotfix: a bug group-tab need this comment
+
    .. group-tab::  Fedora / RHEL
 
       .. kernel-include:: $DOCS_BUILD/includes/searx.rst
-         :code: ini
          :start-after: START searx uwsgi-appini fedora
          :end-before: END searx uwsgi-appini fedora
-
-
diff --git a/docs/blog/index.rst b/docs/blog/index.rst
index 5a8135fdc..04d95350d 100644
--- a/docs/blog/index.rst
+++ b/docs/blog/index.rst
@@ -6,6 +6,7 @@ Blog
    :maxdepth: 2
    :caption: Contents
 
+   lxcdev-202006
    python3
    admin
    intro-offline
diff --git a/docs/blog/lxcdev-202006.rst b/docs/blog/lxcdev-202006.rst
new file mode 100644
index 000000000..f9ca3c2cc
--- /dev/null
+++ b/docs/blog/lxcdev-202006.rst
@@ -0,0 +1,413 @@
+.. _blog-lxcdev-202006:
+
+=======================================
+Developing in Linux containers [202006]
+=======================================
+
+.. _LXC: https://linuxcontainers.org/lxc/introduction/
+
+.. sidebar:: Audience
+
+   This blog post is written for experienced admins and developers / readers
+   should have a serious meaning about: *distributed*, *merge* and *linux
+   container*.
+
+.. contents:: Contents
+   :depth: 2
+   :local:
+   :backlinks: entry
+
+In PR :PR:`1803` we added a lot of scripts to Searx's boilerplate.  In this blog
+post I will show you, how you can make use of them in *distributed and
+heterogeneous development cycles* (TL;DR; jump to the :ref:`blog-lxcdev-202006
+abstract`).
+
+Motivation
+==========
+
+Normally in our development cycle, we edit the sources and run some test and/or
+builds by using ``make`` before we commit.  This cycle is simple and perfect but
+might fail in some aspects we should not overlook.
+
+    The environment in which we run all our development processes matters!
+
+The :ref:`makefile` and the :ref:`make pyenv` encapsulate a lot for us, but they
+do not have access to all prerequisites.  For example, there may have
+dependencies on packages that are installed on the developer's desktop, but
+usually are not preinstalled on a server or client system.  Another examples
+are; settings have been made to the software on the developer's host that would
+never be set on a *production* system.
+
+*Linux Containers* (LXC_) are isolate environments and not to mix up on
+developer's all the prerequisites of all the projects he contribute to, is
+always a good choice.
+
+The scripts from PR :PR:`1803` can divide in those to install and maintain
+software:
+
+- :ref:`searx.sh`
+- :ref:`filtron.sh`
+- :ref:`morty.sh`
+
+and the script :ref:`lxc.sh`, with we can scale our installation, maintenance or
+even development tasks over a stack of containers, what we call: *Searx's lxc
+suite*.
+
+Gentlemen, start your engines!
+==============================
+
+.. _LXD: https://linuxcontainers.org/lxd/introduction/
+.. _archlinux: https://www.archlinux.org/
+
+Before you can start with containers, you need to install and initiate LXD_
+once:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ snap install lxd
+        $ lxd init --auto
+
+And you need to clone from origin or if you have your own fork, clone from your
+fork:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ cd ~/Downloads
+        $ git clone https://github.com/asciimoo/searx.git
+        $ cd searx
+
+The :ref:`lxc-searx.env` consists of several images, see ``export
+LXC_SUITE=(...`` near by :origin:`utils/lxc-searx.env#L19`.  For this blog post
+we exercise on a archlinux_ image.  The container of this image is named
+``searx-archlinux``.  Lets build the container, but be sure that this container
+does not already exists, so first lets remove possible old one:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh remove searx-archlinux
+        $ sudo -H ./utils/lxc.sh build searx-archlinux
+
+.. sidebar:: The ``searx-archlinux`` container
+
+   is the base of all our exercises here.
+
+In this container we install all services :ref:`including searx, morty & filtron
+<lxc.sh install suite>` in once:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh install suite searx-archlinux
+
+To proxy HTTP from filtron and morty in the container to the outside of the
+container, install nginx into the container.  Once for the bot blocker filtron:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          ./utils/filtron.sh nginx install
+        ...
+        INFO:  got 429 from http://10.174.184.156/searx
+
+and once for the content sanitizer (content proxy morty):
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          ./utils/morty.sh nginx install
+        ...
+        INFO:  got 200 from http://10.174.184.156/morty/
+
+.. sidebar:: Fully functional searx suite
+
+   From here on you have a fully functional searx suite running with bot blocker
+   (filtron) and Web content sanitizer (content proxy morty) needed for a
+   *privacy protecting* search engine.
+
+On your system, the IP of your ``searx-archlinux`` container differs from
+http://10.174.184.156/searx, just open the URL reported in your installation
+protocol in your WEB browser from the desktop to test the instance from outside
+of the container.
+
+In such a searx suite admins can maintain and access the debug log of the
+different services quite easy.
+
+.. _working in containers:
+
+In containers, work as usual
+============================
+
+Usually you open a root-bash using ``sudo -H bash``.  In case of LXC containers
+open the root-bash in the container using ``./utils/lxc.sh cmd
+searx-archlinux``:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux bash
+        INFO:  [searx-archlinux] bash
+        [root@searx-archlinux searx]# pwd
+        /share/searx
+
+The prompt ``[root@searx-archlinux ...]`` signals, that you are the root user in
+the searx-container.  To debug the running searx instance use:
+
+.. tabs::
+
+  .. group-tab:: root@searx-archlinux
+
+     .. code:: sh
+
+        $ ./utils/searx.sh inspect service
+        ...
+        use [CTRL-C] to stop monitoring the log
+        ...
+
+Back in the browser on your desktop open the service http://10.174.184.156/searx
+and run your application tests while the debug log is shown in the terminal from
+above.  You can stop monitoring using ``CTRL-C``, this also disables the *"debug
+option"* in searx's settings file and restarts the searx uwsgi application.  To
+debug services from filtron and morty analogous use:
+
+.. tabs::
+
+  .. group-tab:: root@searx-archlinux
+
+     .. code:: sh
+
+        $ ./utils/filtron.sh inspect service
+        $ ./utils/morty.sh inspect service
+
+Another point we have to notice is that each service (:ref:`searx <searx.sh>`,
+:ref:`filtron <filtron.sh>` and :ref:`morty <morty.sh>`) runs under dedicated
+system user account with the same name (compare :ref:`create searx user`).  To
+get a shell from theses accounts, simply call one of the scripts:
+
+.. tabs::
+
+  .. group-tab:: root@searx-archlinux
+
+     .. code:: sh
+
+        $ ./utils/searx.sh shell
+        $ ./utils/filtron.sh shell
+        $ ./utils/morty.sh shell
+
+To get in touch, open a shell from the service user (searx@searx-archlinux):
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+        ./utils/searx.sh shell
+        // exit with [CTRL-D]
+        (searx-pyenv) [searx@searx-archlinux ~]$ ...
+
+The prompt ``[searx@searx-archlinux]`` signals that you are logged in as system
+user ``searx`` in the ``searx-archlinux`` container and the python *virtualenv*
+``(searx-pyenv)`` environment is activated.
+
+.. tabs::
+
+  .. group-tab:: searx@searx-archlinux
+
+     .. code:: sh
+
+        (searx-pyenv) [searx@searx-archlinux ~]$ pwd
+        /usr/local/searx
+
+
+
+Wrap production into developer suite
+====================================
+
+In this section we will see how to change the *"Fully functional searx suite"*
+from a LXC container (which is quite ready for production) into a developer
+suite.  For this, we have to keep an eye on the :ref:`installation basic`:
+
+- searx setup in: ``/etc/searx/settings.yml``
+- searx user's home: ``/usr/local/searx``
+- virtualenv in: ``/usr/local/searx/searx-pyenv``
+- searx software in: ``/usr/local/searx/searx-src``
+
+The searx software is a clone of the ``GIT_URL`` (see :ref:`makefile setup`) and
+the working tree is checked out from the ``GIT_BRANCH``.  With the use of the
+:ref:`searx.sh` the searx service was installed as :ref:`uWSGI application
+<searx uwsgi>`.  To maintain this service, we can use ``systemctl`` (compare
+:ref:`service architectures on distributions <uwsgi configuration>`).
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          systemctl stop uwsgi@searx
+
+With the command above, we stopped the searx uWSGI-App in the archlinux
+container.
+
+The uWSGI-App for the archlinux dsitros is configured in
+:origin:`utils/templates/etc/uwsgi/apps-archlinux/searx.ini`, from where at
+least you should attend the settings of ``uid``, ``chdir``, ``env`` and
+``http``::
+
+  env = SEARX_SETTINGS_PATH=/etc/searx/settings.yml
+  http = 127.0.0.1:8888
+
+  chdir = /usr/local/searx/searx-src/searx
+  virtualenv = /usr/local/searx/searx-pyenv
+  pythonpath = /usr/local/searx/searx-src
+
+If you have read the :ref:`"Good to know section" <lxc.sh>` you remember, that
+each container shares the root folder of the repository and the command
+``utils/lxc.sh cmd`` handles relative path names **transparent**.  To wrap the
+searx installation into a developer one, we simple have to create a smylink to
+the **transparent** reposetory from the desktop.  Now lets replace the
+repository at ``searx-src`` in the container with the working tree from outside
+of the container:
+
+.. tabs::
+
+  .. group-tab:: container becomes a developer suite
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          mv /usr/local/searx/searx-src /usr/local/searx/searx-src.old
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          ln -s /share/searx/ /usr/local/searx/searx-src
+
+Now we can develop as usual in the working tree of our desktop system.  Every
+time the software was changed, you have to restart the searx service (in the
+conatiner):
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          systemctl restart uwsgi@searx
+
+
+Remember: :ref:`working in containers` .. here are just some examples from my
+daily usage:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     To *inspect* the searx instance (already described above):
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          ./utils/searx.sh inspect service
+
+     Run :ref:`makefile`, e.g. to test inside the container:
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          make test
+
+     To install all prerequisites needed for a :ref:`buildhosts`:
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          ./utils/searx.sh install buildhost
+
+     To build the docs on a buildhost :ref:`buildhosts`:
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh cmd searx-archlinux \
+          make docs
+
+.. _blog-lxcdev-202006 abstract:
+
+Abstract
+========
+
+We build up a fully functional searx suite in a archlinux container:
+
+.. code:: sh
+
+   $ sudo -H ./utils/lxc.sh install suite searx-archlinux
+
+To access HTTP from the desktop we installed nginx for the services inside the
+conatiner:
+
+.. tabs::
+
+  .. group-tab:: [root@searx-archlinux]
+
+     .. code:: sh
+
+        $ ./utils/filtron.sh nginx install
+        $ ./utils/morty.sh nginx install
+
+To wrap the suite into a developer one, we created a symbolic link to the
+repository which is shared **transparent** from the desktop's file system into
+the container :
+
+.. tabs::
+
+  .. group-tab:: [root@searx-archlinux]
+
+     .. code:: sh
+
+	$ mv /usr/local/searx/searx-src /usr/local/searx/searx-src.old
+	$ ln -s /share/searx/ /usr/local/searx/searx-src
+	$ systemctl restart uwsgi@searx
+
+To get remarks from the suite of the archlinux container we can use:
+
+.. tabs::
+
+  .. group-tab:: desktop
+
+     .. code:: sh
+
+        $ sudo -H ./utils/lxc.sh show suite searx-archlinux
+        ...
+        [searx-archlinux]  INFO:  (eth0) filtron:    http://10.174.184.156:4004/ http://10.174.184.156/searx
+        [searx-archlinux]  INFO:  (eth0) morty:      http://10.174.184.156:3000/
+        [searx-archlinux]  INFO:  (eth0) docs-live:  http://10.174.184.156:8080/
+        [searx-archlinux]  INFO:  (eth0) IPv6:       http://[fd42:573b:e0b3:e97e:216:3eff:fea5:9b65]
+        ...
+
diff --git a/docs/blog/private-engines.rst b/docs/blog/private-engines.rst
index c26b3ed1c..796f0fc69 100644
--- a/docs/blog/private-engines.rst
+++ b/docs/blog/private-engines.rst
@@ -13,7 +13,7 @@ Private engines
 To solve this issue private engines were introduced in :pull:`1823`.
 A new option was added to engines named `tokens`. It expects a list
 of strings. If the user making a request presents one of the tokens
-of an engine, he/she is able to access information about the engine
+of an engine, they can access information about the engine
 and make search requests.
 
 Example configuration to restrict access to the Arch Linux Wiki engine:
diff --git a/docs/dev/search_api.rst b/docs/dev/search_api.rst
index 922548ffb..960d2fb37 100644
--- a/docs/dev/search_api.rst
+++ b/docs/dev/search_api.rst
@@ -81,7 +81,7 @@ Parameters
   Theme of instance.
 
   Please note, available themes depend on an instance.  It is possible that an
-  instance administrator deleted, created or renamed themes on his/her instance.
+  instance administrator deleted, created or renamed themes on their instance.
   See the available options in the preferences page of the instance.
 
 ``oscar-style`` : default ``logicodev``
@@ -91,7 +91,7 @@ Parameters
   ``oscar``.
 
   Please note, available styles depend on an instance.  It is possible that an
-  instance administrator deleted, created or renamed styles on his/her
+  instance administrator deleted, created or renamed styles on their
   instance. See the available options in the preferences page of the instance.
 
 ``enabled_plugins`` : optional
diff --git a/docs/user/own-instance.rst b/docs/user/own-instance.rst
index 4876abe99..af415b61d 100644
--- a/docs/user/own-instance.rst
+++ b/docs/user/own-instance.rst
@@ -44,9 +44,9 @@ hidden from visited result pages.
 What are the consequences of using public instances?
 ----------------------------------------------------
 
-If someone uses a public instance, he/she has to trust the administrator of that
+If someone uses a public instance, they have to trust the administrator of that
 instance.  This means that the user of the public instance does not know whether
-his/her requests are logged, aggregated and sent or sold to a third party.
+their requests are logged, aggregated and sent or sold to a third party.
 
 Also, public instances without proper protection are more vulnerable to abusing
 the search service, In this case the external service in exchange returns
diff --git a/docs/utils/lxc.sh.rst b/docs/utils/lxc.sh.rst
index ae1412870..114d0911e 100644
--- a/docs/utils/lxc.sh.rst
+++ b/docs/utils/lxc.sh.rst
@@ -47,9 +47,9 @@ one**::
 
 *Good to know ...*
 
-Eeach container shares the root folder of the repository and the
-command ``utils/lxc.sh cmd`` **handles relative path names transparent**,
-compare output of::
+Each container shares the root folder of the repository and the command
+``utils/lxc.sh cmd`` **handles relative path names transparent**, compare output
+of::
 
   $ sudo -H ./utils/lxc.sh cmd -- ls -la Makefile
   ...
@@ -66,6 +66,7 @@ If there comes the time you want to **get rid off all** the containers and
   $ sudo -H ./utils/lxc.sh remove
   $ sudo -H ./utils/lxc.sh remove images
 
+.. _lxc.sh install suite:
 
 Install suite
 =============
diff --git a/searx/engines/duckduckgo.py b/searx/engines/duckduckgo.py
index 0d2c0af2d..6e07b5021 100644
--- a/searx/engines/duckduckgo.py
+++ b/searx/engines/duckduckgo.py
@@ -50,6 +50,7 @@ result_xpath = '//div[@class="result results_links results_links_deep web-result
 url_xpath = './/a[@class="result__a"]/@href'
 title_xpath = './/a[@class="result__a"]'
 content_xpath = './/a[@class="result__snippet"]'
+correction_xpath = '//div[@id="did_you_mean"]//a'
 
 
 # match query's language to a region code that duckduckgo will accept
@@ -125,6 +126,11 @@ def response(resp):
                         'content': content,
                         'url': res_url})
 
+    # parse correction
+    for correction in eval_xpath(doc, correction_xpath):
+        # append correction
+        results.append({'correction': extract_text(correction)})
+
     # return results
     return results
 
diff --git a/searx/engines/gigablast.py b/searx/engines/gigablast.py
index 2bb29a9fe..b139c2a9f 100644
--- a/searx/engines/gigablast.py
+++ b/searx/engines/gigablast.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
 """
  Gigablast (Web)
 
@@ -9,121 +10,117 @@
  @stable      yes
  @parse       url, title, content
 """
+# pylint: disable=missing-function-docstring, invalid-name
 
-import random
+import re
 from json import loads
-from time import time
-from lxml.html import fromstring
-from searx.poolrequests import get
+# from searx import logger
 from searx.url_utils import urlencode
-from searx.utils import eval_xpath
+from searx.poolrequests import get
 
 # engine dependent config
 categories = ['general']
-paging = True
-number_of_results = 10
+# gigablast's pagination is totally damaged, don't use it
+paging = False
 language_support = True
 safesearch = True
 
 # search-url
-base_url = 'https://gigablast.com/'
-search_string = 'search?{query}'\
-    '&n={number_of_results}'\
-    '&c=main'\
-    '&s={offset}'\
-    '&format=json'\
-    '&langcountry={lang}'\
-    '&ff={safesearch}'\
-    '&rand={rxikd}'
-# specific xpath variables
-results_xpath = '//response//result'
-url_xpath = './/url'
-title_xpath = './/title'
-content_xpath = './/sum'
-
-supported_languages_url = 'https://gigablast.com/search?&rxikd=1'
-
-extra_param = ''  # gigablast requires a random extra parameter
-# which can be extracted from the source code of the search page
+base_url = 'https://gigablast.com'
 
+# ugly hack: gigablast requires a random extra parameter which can be extracted
+# from the source code of the gigablast HTTP client
+extra_param = ''
+extra_param_path='/search?c=main&qlangcountry=en-us&q=south&s=10'
 
 def parse_extra_param(text):
-    global extra_param
-    param_lines = [x for x in text.splitlines() if x.startswith('var url=') or x.startswith('url=url+')]
-    extra_param = ''
-    for l in param_lines:
-        extra_param += l.split("'")[1]
-    extra_param = extra_param.split('&')[-1]
 
-
-def init(engine_settings=None):
-    parse_extra_param(get('http://gigablast.com/search?c=main&qlangcountry=en-us&q=south&s=10').text)
+    # example:
+    #
+    # var uxrl='/search?c=main&qlangcountry=en-us&q=south&s=10&rand=1590740241635&n';
+    # uxrl=uxrl+'sab=730863287';
+    #
+    # extra_param --> "rand=1590740241635&nsab=730863287"
+
+    global extra_param  # pylint: disable=global-statement
+    re_var= None
+    for line in text.splitlines():
+        if re_var is None and extra_param_path in line:
+            var = line.split("=")[0].split()[1]  # e.g. var --> 'uxrl'
+            re_var = re.compile(var + "\\s*=\\s*" + var + "\\s*\\+\\s*'" + "(.*)" + "'(.*)")
+            extra_param = line.split("'")[1][len(extra_param_path):]
+            continue
+        if re_var is not None and re_var.search(line):
+            extra_param += re_var.search(line).group(1)
+            break
+    # logger.debug('gigablast extra_param="%s"', extra_param)
+
+def init(engine_settings=None):  # pylint: disable=unused-argument
+    parse_extra_param(get(base_url + extra_param_path).text)
 
 
 # do search-request
-def request(query, params):
-    print("EXTRAPARAM:", extra_param)
-    offset = (params['pageno'] - 1) * number_of_results
+def request(query, params):  # pylint: disable=unused-argument
 
-    if params['language'] == 'all':
-        language = 'xx'
-    else:
-        language = params['language'].replace('-', '_').lower()
-        if language.split('-')[0] != 'zh':
-            language = language.split('-')[0]
+    # see API http://www.gigablast.com/api.html#/search
+    # Take into account, that the API has some quirks ..
 
-    if params['safesearch'] >= 1:
-        safesearch = 1
-    else:
-        safesearch = 0
+    query_args = dict(
+        c = 'main'
+        , format = 'json'
+        , q = query
+        , dr = 1
+        , showgoodimages = 0
+    )
 
-    # rxieu is some kind of hash from the search query, but accepts random atm
-    search_path = search_string.format(query=urlencode({'q': query}),
-                                       offset=offset,
-                                       number_of_results=number_of_results,
-                                       lang=language,
-                                       rxikd=int(time() * 1000),
-                                       safesearch=safesearch)
+    if params['language'] and params['language'] != 'all':
+        query_args['qlangcountry'] = params['language']
+        query_args['qlang'] = params['language'].split('-')[0]
 
-    params['url'] = base_url + search_path + '&' + extra_param
+    if params['safesearch'] >= 1:
+        query_args['ff'] = 1
 
-    return params
+    search_url = '/search?' + urlencode(query_args)
+    params['url'] = base_url + search_url + extra_param
 
+    return params
 
 # get response from search-request
 def response(resp):
     results = []
 
-    # parse results
-    try:
-        response_json = loads(resp.text)
-    except:
-        parse_extra_param(resp.text)
-        raise Exception('extra param expired, please reload')
+    response_json = loads(resp.text)
+
+    # logger.debug('gigablast returns %s results', len(response_json['results']))
 
     for result in response_json['results']:
-        # append result
-        results.append({'url': result['url'],
-                        'title': result['title'],
-                        'content': result['sum']})
+        # see "Example JSON Output (&format=json)"
+        # at http://www.gigablast.com/api.html#/search
 
-    # return results
-    return results
+        # sort out meaningless result
+
+        title = result.get('title')
+        if len(title) < 2:
+            continue
+
+        url = result.get('url')
+        if len(url) < 9:
+            continue
+
+        content = result.get('sum')
+        if len(content) < 5:
+            continue
 
+        # extend fields
 
-# get supported languages from their site
-def _fetch_supported_languages(resp):
-    supported_languages = []
-    dom = fromstring(resp.text)
-    links = eval_xpath(dom, '//span[@id="menu2"]/a')
-    for link in links:
-        href = eval_xpath(link, './@href')[0].split('lang%3A')
-        if len(href) == 2:
-            code = href[1].split('_')
-            if len(code) == 2:
-                code = code[0] + '-' + code[1].upper()
-            else:
-                code = code[0]
-            supported_languages.append(code)
-
-    return supported_languages
+        subtitle = result.get('title')
+        if len(subtitle) > 3 and subtitle != title:
+            title += " - " + subtitle
+
+        results.append(dict(
+            url = url
+            , title = title
+            , content = content
+        ))
+
+    return results
diff --git a/searx/engines/yacy.py b/searx/engines/yacy.py
index 25bc83687..f1d4c6abe 100644
--- a/searx/engines/yacy.py
+++ b/searx/engines/yacy.py
@@ -75,7 +75,7 @@ def response(resp):
 
     for result in search_results[0].get('items', []):
         # parse image results
-        if result.get('image'):
+        if result.get('image') and result.get('width') and result.get('height'):
 
             result_url = ''
             if 'url' in result:
diff --git a/searx/engines/yahoo.py b/searx/engines/yahoo.py
index 36c1a11f8..a6b4aeb9f 100644
--- a/searx/engines/yahoo.py
+++ b/searx/engines/yahoo.py
@@ -33,7 +33,7 @@ supported_languages_url = 'https://search.yahoo.com/web/advanced'
 results_xpath = "//div[contains(concat(' ', normalize-space(@class), ' '), ' Sr ')]"
 url_xpath = './/h3/a/@href'
 title_xpath = './/h3/a'
-content_xpath = './/div[@class="compText aAbs"]'
+content_xpath = './/div[contains(@class, "compText")]'
 suggestion_xpath = "//div[contains(concat(' ', normalize-space(@class), ' '), ' AlsoTry ')]//a"
 
 time_range_dict = {'day': ['1d', 'd'],
diff --git a/searx/static/themes/oscar/css/logicodev-dark.css b/searx/static/themes/oscar/css/logicodev-dark.css
index 71435b08b..dadf6f140 100644
--- a/searx/static/themes/oscar/css/logicodev-dark.css
+++ b/searx/static/themes/oscar/css/logicodev-dark.css
@@ -70,7 +70,21 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   -ms-user-select: none;
 }
 .onoffswitch-checkbox {
-  display: none;
+  opacity: 0;
+  position: absolute;
+}
+.onoffswitch-checkbox:before {
+  content: "";
+  display: inline-block;
+  width: 16px;
+  height: 16px;
+  margin-right: 10px;
+  position: absolute;
+  left: 0;
+  bottom: 1px;
+  background-color: #fff;
+  border: 1px solid #ccc;
+  border-radius: 0px;
 }
 .onoffswitch-label {
   display: block;
@@ -104,7 +118,7 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   top: 0;
   bottom: 0;
   right: 0px;
-  border: 2px solid #FFFFFF !important;
+  border: 2px solid #FFFFFF;
   border-radius: 50px !important;
   transition: all 0.3s ease-in 0s;
 }
@@ -115,6 +129,9 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   right: 71px;
   background-color: #A1A1A1;
 }
+.onoffswitch-checkbox:focus + .onoffswitch-label .onoffswitch-switch {
+  border: 3px solid #444444;
+}
 .result_header {
   margin-top: 0px;
   margin-bottom: 2px;
@@ -377,6 +394,17 @@ Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
 .search-margin {
   margin-bottom: 0.6em;
 }
+.visually-hidden {
+  position: absolute !important;
+  height: 1px;
+  width: 1px;
+  overflow: hidden;
+  clip: rect(1px 1px 1px 1px);
+  /* IE6, IE7 */
+  clip: rect(1px, 1px, 1px, 1px);
+  white-space: nowrap;
+  /* added line */
+}
 #advanced-search-container {
   display: none;
   text-align: left;
@@ -407,8 +435,8 @@ Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
   font-weight: bold;
   border-bottom: #01d7d4 5px solid;
 }
-#check-advanced {
-  display: none;
+#check-advanced:focus + label {
+  text-decoration: underline;
 }
 #check-advanced:checked ~ #advanced-search-container {
   display: block;
diff --git a/searx/static/themes/oscar/css/logicodev-dark.min.css b/searx/static/themes/oscar/css/logicodev-dark.min.css
index bfb7b8d6a..ccafea854 100644
--- a/searx/static/themes/oscar/css/logicodev-dark.min.css
+++ b/searx/static/themes/oscar/css/logicodev-dark.min.css
@@ -1 +1 @@
-*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{display:none}.onoffswitch-label{display:block;overflow:hidden;cursor:pointer;border:2px solid #FFF!important;border-radius:50px!important}.onoffswitch-inner{display:block;transition:margin .3s ease-in 0s}.onoffswitch-inner:before,.onoffswitch-inner:after{display:block;float:left;width:50%;height:30px;padding:0;line-height:40px;font-size:20px;box-sizing:border-box;content:"";background-color:#EEE}.onoffswitch-switch{display:block;width:37px;background-color:#01d7d4;position:absolute;top:0;bottom:0;right:0;border:2px solid #FFF!important;border-radius:50px!important;transition:all .3s ease-in 0s}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-inner{margin-right:0}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-switch{right:71px;background-color:#A1A1A1}.result_header{margin-top:0;margin-bottom:2px;font-size:16px}.result_header .favicon{margin-bottom:-3px}.result_header a{color:#29314d;text-decoration:none}.result_header a:hover{color:#08c}.result_header a:visited{color:#684898}.result_header a .highlight{background-color:#f6f9fa}.result-content,.result-format,.result-source{margin-top:2px;margin-bottom:0;word-wrap:break-word;color:#666;font-size:13px}.result-content .highlight,.result-format .highlight,.result-source .highlight{font-weight:700}.result-source{font-size:10px;float:left}.result-format{font-size:10px;float:right}.external-link{color:#069025;font-size:12px;margin-bottom:15px}.external-link a{margin-right:3px}.result-default,.result-code,.result-torrent,.result-videos,.result-map{clear:both;padding:.5em 4px}.result-default:hover,.result-code:hover,.result-torrent:hover,.result-videos:hover,.result-map:hover{background-color:#f6f9fa}.result-images{float:left!important;width:24%;margin:.5%}.result-images a{display:block;width:100%;background-size:cover}.img-thumbnail{margin:5px;max-height:128px;min-height:128px}.result-videos{clear:both}.result-videos hr{margin:5px 0 15px 0}.result-videos .collapse{width:100%}.result-videos .in{margin-bottom:8px}.result-torrent{clear:both}.result-torrent b{margin-right:5px;margin-left:5px}.result-torrent .seeders{color:#2ecc71}.result-torrent .leechers{color:#f35e77}.result-map{clear:both}.result-code{clear:both}.result-code .code-fork,.result-code .code-fork a{color:#666}.suggestion_item{margin:2px 5px;max-width:100%}.suggestion_item .btn{max-width:100%;white-space:normal;word-wrap:break-word;text-align:left}.result_download{margin-right:5px}#pagination{margin-top:30px;padding-bottom:60px}.label-default{color:#a4a4a4;background:0 0}.result .text-muted small{word-wrap:break-word}.modal-wrapper{box-shadow:0 5px 15px rgba(0,0,0,.5)}.modal-wrapper{background-clip:padding-box;background-color:#fff;border:1px solid rgba(0,0,0,.2);border-radius:6px;box-shadow:0 3px 9px rgba(0,0,0,.5);outline:0 none;position:relative}@media screen and (max-width:75em){.img-thumbnail{object-fit:cover}}.infobox .panel-heading{background-color:#f6f9fa}.infobox .panel-heading .panel-title{font-weight:700}.infobox p{font-family:"DejaVu Serif",Georgia,Cambria,"Times New Roman",Times,serif!important;font-style:italic}.infobox .btn{background-color:#2ecc71;border:none}.infobox .btn a{color:#fff;margin:5px}.infobox .infobox_part{margin-bottom:20px;word-wrap:break-word;table-layout:fixed}.infobox .infobox_part:last-child{margin-bottom:0}.search_categories,#categories{text-transform:capitalize;margin-bottom:.5rem;display:flex;flex-wrap:wrap;flex-flow:row wrap;align-content:stretch}.search_categories label,#categories label,.search_categories .input-group-addon,#categories .input-group-addon{flex-grow:1;flex-basis:auto;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-top:.4rem;text-align:center;min-width:50px}.search_categories label:last-child,#categories label:last-child,.search_categories .input-group-addon:last-child,#categories .input-group-addon:last-child{border-right:#ddd 1px solid}.search_categories input[type=checkbox]:checked+label,#categories input[type=checkbox]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#main-logo{margin-top:10vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}#q{box-shadow:none;border-right:none;border-color:#a4a4a4}#search_form .input-group-btn .btn{border-color:#a4a4a4}#search_form .input-group-btn .btn:hover{background-color:#2ecc71;color:#fff}.custom-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;color:#666;background:url(data:image/png;base64,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) 96% no-repeat}.search-margin{margin-bottom:.6em}#advanced-search-container{display:none;text-align:left;margin-bottom:1rem;clear:both}#advanced-search-container label,#advanced-search-container .input-group-addon{font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-right:.7rem;padding-left:.7rem}#advanced-search-container label:last-child,#advanced-search-container .input-group-addon:last-child{border-right:#ddd 1px solid}#advanced-search-container input[type=radio]{display:none}#advanced-search-container input[type=radio]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#check-advanced{display:none}#check-advanced:checked~#advanced-search-container{display:block}.advanced{padding:0;margin-top:.3rem;text-align:right}.advanced label,.advanced select{cursor:pointer}.cursor-text{cursor:text!important}.cursor-pointer{cursor:pointer!important}pre,code{font-family:'Ubuntu Mono','Courier New','Lucida Console',monospace!important}.lineno{margin-right:5px}.highlight .hll{background-color:#ffc}.highlight{background:#f8f8f8}.highlight .c{color:#556366;font-style:italic}.highlight .err{border:1px solid #ffa92f}.highlight .k{color:#BE74D5;font-weight:700}.highlight .o{color:#d19a66}.highlight .cm{color:#556366;font-style:italic}.highlight .cp{color:#bc7a00}.highlight .c1{color:#556366;font-style:italic}.highlight .cs{color:#556366;font-style:italic}.highlight .gd{color:#a00000}.highlight .ge{font-style:italic}.highlight .gr{color:red}.highlight .gh{color:navy;font-weight:700}.highlight .gi{color:#00a000}.highlight .go{color:#888}.highlight .gp{color:navy;font-weight:700}.highlight .gs{font-weight:700}.highlight .gu{color:purple;font-weight:700}.highlight .gt{color:#04d}.highlight .kc{color:#BE74D5;font-weight:700}.highlight .kd{color:#BE74D5;font-weight:700}.highlight .kn{color:#BE74D5;font-weight:700}.highlight .kp{color:#be74d5}.highlight .kr{color:#BE74D5;font-weight:700}.highlight .kt{color:#d46c72}.highlight .m{color:#d19a66}.highlight .s{color:#86c372}.highlight .na{color:#7d9029}.highlight .nb{color:#be74d5}.highlight .nc{color:#61AFEF;font-weight:700}.highlight .no{color:#d19a66}.highlight .nd{color:#a2f}.highlight .ni{color:#999;font-weight:700}.highlight .ne{color:#D2413A;font-weight:700}.highlight .nf{color:#61afef}.highlight .nl{color:#a0a000}.highlight .nn{color:#61AFEF;font-weight:700}.highlight .nt{color:#BE74D5;font-weight:700}.highlight .nv{color:#dfc06f}.highlight .ow{color:#A2F;font-weight:700}.highlight .w{color:#d7dae0}.highlight .mf{color:#d19a66}.highlight .mh{color:#d19a66}.highlight .mi{color:#d19a66}.highlight .mo{color:#d19a66}.highlight .sb{color:#86c372}.highlight .sc{color:#86c372}.highlight .sd{color:#86C372;font-style:italic}.highlight .s2{color:#86c372}.highlight .se{color:#B62;font-weight:700}.highlight .sh{color:#86c372}.highlight .si{color:#B68;font-weight:700}.highlight .sx{color:#be74d5}.highlight .sr{color:#b68}.highlight .s1{color:#86c372}.highlight .ss{color:#dfc06f}.highlight .bp{color:#be74d5}.highlight .vc{color:#dfc06f}.highlight .vg{color:#dfc06f}.highlight .vi{color:#dfc06f}.highlight .il{color:#d19a66}.highlight 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\ No newline at end of file
+*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{opacity:0;position:absolute}.onoffswitch-checkbox:before{content:"";display:inline-block;width:16px;height:16px;margin-right:10px;position:absolute;left:0;bottom:1px;background-color:#fff;border:1px solid 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a{color:#29314d;text-decoration:none}.result_header a:hover{color:#08c}.result_header a:visited{color:#684898}.result_header a .highlight{background-color:#f6f9fa}.result-content,.result-format,.result-source{margin-top:2px;margin-bottom:0;word-wrap:break-word;color:#666;font-size:13px}.result-content .highlight,.result-format .highlight,.result-source .highlight{font-weight:700}.result-source{font-size:10px;float:left}.result-format{font-size:10px;float:right}.external-link{color:#069025;font-size:12px;margin-bottom:15px}.external-link a{margin-right:3px}.result-default,.result-code,.result-torrent,.result-videos,.result-map{clear:both;padding:.5em 4px}.result-default:hover,.result-code:hover,.result-torrent:hover,.result-videos:hover,.result-map:hover{background-color:#f6f9fa}.result-images{float:left!important;width:24%;margin:.5%}.result-images a{display:block;width:100%;background-size:cover}.img-thumbnail{margin:5px;max-height:128px;min-height:128px}.result-videos{clear:both}.result-videos hr{margin:5px 0 15px 0}.result-videos .collapse{width:100%}.result-videos .in{margin-bottom:8px}.result-torrent{clear:both}.result-torrent b{margin-right:5px;margin-left:5px}.result-torrent .seeders{color:#2ecc71}.result-torrent .leechers{color:#f35e77}.result-map{clear:both}.result-code{clear:both}.result-code .code-fork,.result-code .code-fork a{color:#666}.suggestion_item{margin:2px 5px;max-width:100%}.suggestion_item .btn{max-width:100%;white-space:normal;word-wrap:break-word;text-align:left}.result_download{margin-right:5px}#pagination{margin-top:30px;padding-bottom:60px}.label-default{color:#a4a4a4;background:0 0}.result .text-muted small{word-wrap:break-word}.modal-wrapper{box-shadow:0 5px 15px rgba(0,0,0,.5)}.modal-wrapper{background-clip:padding-box;background-color:#fff;border:1px solid rgba(0,0,0,.2);border-radius:6px;box-shadow:0 3px 9px rgba(0,0,0,.5);outline:0 none;position:relative}@media screen and (max-width:75em){.img-thumbnail{object-fit:cover}}.infobox .panel-heading{background-color:#f6f9fa}.infobox .panel-heading .panel-title{font-weight:700}.infobox p{font-family:"DejaVu Serif",Georgia,Cambria,"Times New Roman",Times,serif!important;font-style:italic}.infobox .btn{background-color:#2ecc71;border:none}.infobox .btn a{color:#fff;margin:5px}.infobox .infobox_part{margin-bottom:20px;word-wrap:break-word;table-layout:fixed}.infobox .infobox_part:last-child{margin-bottom:0}.search_categories,#categories{text-transform:capitalize;margin-bottom:.5rem;display:flex;flex-wrap:wrap;flex-flow:row wrap;align-content:stretch}.search_categories label,#categories label,.search_categories .input-group-addon,#categories .input-group-addon{flex-grow:1;flex-basis:auto;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-top:.4rem;text-align:center;min-width:50px}.search_categories label:last-child,#categories label:last-child,.search_categories .input-group-addon:last-child,#categories .input-group-addon:last-child{border-right:#ddd 1px solid}.search_categories input[type=checkbox]:checked+label,#categories input[type=checkbox]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#main-logo{margin-top:10vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}#q{box-shadow:none;border-right:none;border-color:#a4a4a4}#search_form .input-group-btn .btn{border-color:#a4a4a4}#search_form .input-group-btn .btn:hover{background-color:#2ecc71;color:#fff}.custom-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;color:#666;background:url(data:image/png;base64,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) 96% no-repeat}.search-margin{margin-bottom:.6em}.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px 1px 1px 1px);clip:rect(1px,1px,1px,1px);white-space:nowrap}#advanced-search-container{display:none;text-align:left;margin-bottom:1rem;clear:both}#advanced-search-container label,#advanced-search-container .input-group-addon{font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-right:.7rem;padding-left:.7rem}#advanced-search-container label:last-child,#advanced-search-container .input-group-addon:last-child{border-right:#ddd 1px solid}#advanced-search-container input[type=radio]{display:none}#advanced-search-container input[type=radio]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#check-advanced:focus+label{text-decoration:underline}#check-advanced:checked~#advanced-search-container{display:block}.advanced{padding:0;margin-top:.3rem;text-align:right}.advanced label,.advanced select{cursor:pointer}.cursor-text{cursor:text!important}.cursor-pointer{cursor:pointer!important}pre,code{font-family:'Ubuntu Mono','Courier New','Lucida Console',monospace!important}.lineno{margin-right:5px}.highlight .hll{background-color:#ffc}.highlight{background:#f8f8f8}.highlight .c{color:#556366;font-style:italic}.highlight .err{border:1px solid #ffa92f}.highlight .k{color:#BE74D5;font-weight:700}.highlight .o{color:#d19a66}.highlight .cm{color:#556366;font-style:italic}.highlight .cp{color:#bc7a00}.highlight .c1{color:#556366;font-style:italic}.highlight .cs{color:#556366;font-style:italic}.highlight .gd{color:#a00000}.highlight .ge{font-style:italic}.highlight .gr{color:red}.highlight .gh{color:navy;font-weight:700}.highlight .gi{color:#00a000}.highlight .go{color:#888}.highlight .gp{color:navy;font-weight:700}.highlight .gs{font-weight:700}.highlight .gu{color:purple;font-weight:700}.highlight .gt{color:#04d}.highlight .kc{color:#BE74D5;font-weight:700}.highlight .kd{color:#BE74D5;font-weight:700}.highlight .kn{color:#BE74D5;font-weight:700}.highlight .kp{color:#be74d5}.highlight .kr{color:#BE74D5;font-weight:700}.highlight .kt{color:#d46c72}.highlight .m{color:#d19a66}.highlight .s{color:#86c372}.highlight .na{color:#7d9029}.highlight .nb{color:#be74d5}.highlight .nc{color:#61AFEF;font-weight:700}.highlight .no{color:#d19a66}.highlight .nd{color:#a2f}.highlight .ni{color:#999;font-weight:700}.highlight .ne{color:#D2413A;font-weight:700}.highlight .nf{color:#61afef}.highlight .nl{color:#a0a000}.highlight .nn{color:#61AFEF;font-weight:700}.highlight .nt{color:#BE74D5;font-weight:700}.highlight .nv{color:#dfc06f}.highlight .ow{color:#A2F;font-weight:700}.highlight .w{color:#d7dae0}.highlight .mf{color:#d19a66}.highlight .mh{color:#d19a66}.highlight .mi{color:#d19a66}.highlight .mo{color:#d19a66}.highlight .sb{color:#86c372}.highlight .sc{color:#86c372}.highlight .sd{color:#86C372;font-style:italic}.highlight .s2{color:#86c372}.highlight .se{color:#B62;font-weight:700}.highlight .sh{color:#86c372}.highlight .si{color:#B68;font-weight:700}.highlight .sx{color:#be74d5}.highlight .sr{color:#b68}.highlight .s1{color:#86c372}.highlight .ss{color:#dfc06f}.highlight .bp{color:#be74d5}.highlight .vc{color:#dfc06f}.highlight 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#C5C8C6!important;box-shadow:initial!important}div#advanced-search-container div#categories label{background:0 0;border:1px solid #282a2e}ul.nav li a{border:0!important;border-bottom:1px solid #4d3f43!important}#categories *,.modal-wrapper *{background:#1d1f21 none!important;color:#D5D8D7!important}#categories *{border:1px solid #3d3f43!important}#categories :checked+label{border-bottom:4px solid #3d9f94!important}.result-content,.result-source,.result-format{color:#B5B8B7!important}.external-link{color:#35B887!important}.table-striped tr td,.table-striped tr th{border-color:#4d3f43!important}.highlight{background:#333!important}.navbar{background:#1d1f21 none;border:none}.navbar .active,.menu{background:none!important}.label-default{background:0 0;color:#BBB}.navbar-default .navbar-nav>.active>a,.navbar-default .navbar-nav>.active>a:hover,.navbar-default .navbar-nav>.active>a:focus,.nav-tabs.nav-justified>.active>a{background-color:#282a2e!important}.result-default:hover,.result-code:hover,.result-torrent:hover,.result-videos:hover,.result-map:hover{background-color:#222426}.btn{color:#BBB;background-color:#444;border:1px solid #282a2e}.btn:hover{color:#444!important;background-color:#BBB!important}.btn-primary.active{color:#C5C8C6;background-color:#5F89AC;border-color:#5F89AC}.panel{border:1px solid #111;background:0 0}.panel-heading{color:#C5C8C6!important;background:#282a2e!important;border-bottom:none}.panel-body{color:#C5C8C6!important;background:#1d1f21!important;border-color:#111!important}p.btn.btn-default{background:0 0}.table-striped>tbody>tr:nth-child(odd)>td,.table-striped>tbody>tr:nth-child(odd)>th,.table-striped>thead>tr:nth-child(odd)>th{background:#2d2f32 none!important;color:#D5D8D7!important}.label-success{background:#1d6f42 none!important}.label-danger{background:#ad1f12 none!important}.searx-navbar{background:#333334;height:2.3rem;font-size:1.3rem;line-height:1.3rem;padding:.5rem;font-weight:700;margin-bottom:.8rem}.searx-navbar a,.searx-navbar a:hover{margin-right:2rem;color:#fff;text-decoration:none}.searx-navbar .instance a{color:#01d7d4;margin-left:2rem}#main-logo{margin-top:20vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}.onoffswitch-inner:before,.onoffswitch-inner:after{background:#1d1f21 none!important}.onoffswitch-switch,.onoffswitch-label{border:2px solid #3d3f43!important}.nav>li>a:hover,.nav>li>a:focus{background-color:#3d3f43!important}.img-thumbnail,.thumbnail{padding:0;line-height:1.42857143;background:0 0;border:none}.modal-content{background:#1d1f21 none!important}.table>thead>tr>td.danger,.table>tbody>tr>td.danger,.table>tfoot>tr>td.danger,.table>thead>tr>th.danger,.table>tbody>tr>th.danger,.table>tfoot>tr>th.danger,.table>thead>tr.danger>td,.table>tbody>tr.danger>td,.table>tfoot>tr.danger>td,.table>thead>tr.danger>th,.table>tbody>tr.danger>th,.table>tfoot>tr.danger>th{background:rgba(240,0,0,.56)!important;color:#C5C8C6!important}.table-hover>tbody>tr>td.danger:hover,.table-hover>tbody>tr>th.danger:hover,.table-hover>tbody>tr.danger:hover>td,.table-hover>tbody>tr:hover>.danger,.table-hover>tbody>tr.danger:hover>th{background:rgba(237,59,59,.61)!important;color:#C5C8C6!important}.table-hover>tbody>tr:hover>td,.table-hover>tbody>tr:hover>th{background:#66696e!important}.btn-success{color:#C5C8C6;background:#449d44}.btn-danger{color:#C5C8C6;background:#d9534f}.well{background:#444;border-color:#282a2e}.highlight{background-color:transparent!important}
\ No newline at end of file
diff --git a/searx/static/themes/oscar/css/logicodev.css b/searx/static/themes/oscar/css/logicodev.css
index 77f5f34cf..f082f273b 100644
--- a/searx/static/themes/oscar/css/logicodev.css
+++ b/searx/static/themes/oscar/css/logicodev.css
@@ -43,7 +43,21 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   -ms-user-select: none;
 }
 .onoffswitch-checkbox {
-  display: none;
+  opacity: 0;
+  position: absolute;
+}
+.onoffswitch-checkbox:before {
+  content: "";
+  display: inline-block;
+  width: 16px;
+  height: 16px;
+  margin-right: 10px;
+  position: absolute;
+  left: 0;
+  bottom: 1px;
+  background-color: #fff;
+  border: 1px solid #ccc;
+  border-radius: 0px;
 }
 .onoffswitch-label {
   display: block;
@@ -77,7 +91,7 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   top: 0;
   bottom: 0;
   right: 0px;
-  border: 2px solid #FFFFFF !important;
+  border: 2px solid #FFFFFF;
   border-radius: 50px !important;
   transition: all 0.3s ease-in 0s;
 }
@@ -88,6 +102,9 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   right: 71px;
   background-color: #A1A1A1;
 }
+.onoffswitch-checkbox:focus + .onoffswitch-label .onoffswitch-switch {
+  border: 3px solid #444444;
+}
 .result_header {
   margin-top: 0px;
   margin-bottom: 2px;
@@ -350,6 +367,17 @@ Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
 .search-margin {
   margin-bottom: 0.6em;
 }
+.visually-hidden {
+  position: absolute !important;
+  height: 1px;
+  width: 1px;
+  overflow: hidden;
+  clip: rect(1px 1px 1px 1px);
+  /* IE6, IE7 */
+  clip: rect(1px, 1px, 1px, 1px);
+  white-space: nowrap;
+  /* added line */
+}
 #advanced-search-container {
   display: none;
   text-align: left;
@@ -380,8 +408,8 @@ Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
   font-weight: bold;
   border-bottom: #01d7d4 5px solid;
 }
-#check-advanced {
-  display: none;
+#check-advanced:focus + label {
+  text-decoration: underline;
 }
 #check-advanced:checked ~ #advanced-search-container {
   display: block;
diff --git a/searx/static/themes/oscar/css/logicodev.min.css b/searx/static/themes/oscar/css/logicodev.min.css
index 97c4efb4a..37549eaa6 100644
--- a/searx/static/themes/oscar/css/logicodev.min.css
+++ b/searx/static/themes/oscar/css/logicodev.min.css
@@ -1 +1 @@
-.searx-navbar{background:#29314d;height:2.3rem;font-size:1.3rem;line-height:1.3rem;padding:.5rem;font-weight:700;margin-bottom:.8rem}.searx-navbar a,.searx-navbar a:hover{margin-right:2rem;color:#fff;text-decoration:none}.searx-navbar .instance a{color:#01d7d4;margin-left:2rem}#main-logo{margin-top:20vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{display:none}.onoffswitch-label{display:block;overflow:hidden;cursor:pointer;border:2px solid #FFF!important;border-radius:50px!important}.onoffswitch-inner{display:block;transition:margin .3s ease-in 0s}.onoffswitch-inner:before,.onoffswitch-inner:after{display:block;float:left;width:50%;height:30px;padding:0;line-height:40px;font-size:20px;box-sizing:border-box;content:"";background-color:#EEE}.onoffswitch-switch{display:block;width:37px;background-color:#01d7d4;position:absolute;top:0;bottom:0;right:0;border:2px solid #FFF!important;border-radius:50px!important;transition:all .3s ease-in 0s}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-inner{margin-right:0}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-switch{right:71px;background-color:#A1A1A1}.result_header{margin-top:0;margin-bottom:2px;font-size:16px}.result_header .favicon{margin-bottom:-3px}.result_header a{color:#29314d;text-decoration:none}.result_header a:hover{color:#08c}.result_header a:visited{color:#684898}.result_header a .highlight{background-color:#f6f9fa}.result-content,.result-format,.result-source{margin-top:2px;margin-bottom:0;word-wrap:break-word;color:#666;font-size:13px}.result-content .highlight,.result-format .highlight,.result-source .highlight{font-weight:700}.result-source{font-size:10px;float:left}.result-format{font-size:10px;float:right}.external-link{color:#069025;font-size:12px;margin-bottom:15px}.external-link a{margin-right:3px}.result-default,.result-code,.result-torrent,.result-videos,.result-map{clear:both;padding:.5em 4px}.result-default:hover,.result-code:hover,.result-torrent:hover,.result-videos:hover,.result-map:hover{background-color:#f6f9fa}.result-images{float:left!important;width:24%;margin:.5%}.result-images a{display:block;width:100%;background-size:cover}.img-thumbnail{margin:5px;max-height:128px;min-height:128px}.result-videos{clear:both}.result-videos hr{margin:5px 0 15px 0}.result-videos .collapse{width:100%}.result-videos .in{margin-bottom:8px}.result-torrent{clear:both}.result-torrent b{margin-right:5px;margin-left:5px}.result-torrent .seeders{color:#2ecc71}.result-torrent .leechers{color:#f35e77}.result-map{clear:both}.result-code{clear:both}.result-code .code-fork,.result-code .code-fork a{color:#666}.suggestion_item{margin:2px 5px;max-width:100%}.suggestion_item .btn{max-width:100%;white-space:normal;word-wrap:break-word;text-align:left}.result_download{margin-right:5px}#pagination{margin-top:30px;padding-bottom:60px}.label-default{color:#a4a4a4;background:0 0}.result .text-muted small{word-wrap:break-word}.modal-wrapper{box-shadow:0 5px 15px rgba(0,0,0,.5)}.modal-wrapper{background-clip:padding-box;background-color:#fff;border:1px solid rgba(0,0,0,.2);border-radius:6px;box-shadow:0 3px 9px rgba(0,0,0,.5);outline:0 none;position:relative}@media screen and (max-width:75em){.img-thumbnail{object-fit:cover}}.infobox .panel-heading{background-color:#f6f9fa}.infobox .panel-heading .panel-title{font-weight:700}.infobox p{font-family:"DejaVu Serif",Georgia,Cambria,"Times New Roman",Times,serif!important;font-style:italic}.infobox .btn{background-color:#2ecc71;border:none}.infobox .btn a{color:#fff;margin:5px}.infobox .infobox_part{margin-bottom:20px;word-wrap:break-word;table-layout:fixed}.infobox .infobox_part:last-child{margin-bottom:0}.search_categories,#categories{text-transform:capitalize;margin-bottom:.5rem;display:flex;flex-wrap:wrap;flex-flow:row wrap;align-content:stretch}.search_categories label,#categories label,.search_categories .input-group-addon,#categories .input-group-addon{flex-grow:1;flex-basis:auto;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-top:.4rem;text-align:center;min-width:50px}.search_categories label:last-child,#categories label:last-child,.search_categories .input-group-addon:last-child,#categories .input-group-addon:last-child{border-right:#ddd 1px solid}.search_categories input[type=checkbox]:checked+label,#categories input[type=checkbox]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#main-logo{margin-top:10vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}#q{box-shadow:none;border-right:none;border-color:#a4a4a4}#search_form .input-group-btn .btn{border-color:#a4a4a4}#search_form .input-group-btn .btn:hover{background-color:#2ecc71;color:#fff}.custom-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;color:#666;background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAAPCAQAAACR313BAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAAmJLR0QA/4ePzL8AAAAJcEhZcwAABFkAAARZAVnbJUkAAAAHdElNRQfgBxgLDwB20OFsAAAAbElEQVQY073OsQ3CMAAEwJMYwJGnsAehpoXJItltBkmcdZBYgIIiQoLglnz3ui+eP+bk5uneteTMZJa6OJuIqvYzSJoqwqBq8gdmTTW86/dghxAUq4xsVYT9laBYXCw93Aajh7GPEF23t4fkBYevGFTANkPRAAAAJXRFWHRkYXRlOmNyZWF0ZQAyMDE2LTA3LTI0VDExOjU1OjU4KzAyOjAwRFqFOQAAACV0RVh0ZGF0ZTptb2RpZnkAMjAxNi0wNy0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb7jwaAAAAAElFTkSuQmCC) 96% no-repeat}.search-margin{margin-bottom:.6em}#advanced-search-container{display:none;text-align:left;margin-bottom:1rem;clear:both}#advanced-search-container label,#advanced-search-container .input-group-addon{font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-right:.7rem;padding-left:.7rem}#advanced-search-container label:last-child,#advanced-search-container .input-group-addon:last-child{border-right:#ddd 1px solid}#advanced-search-container input[type=radio]{display:none}#advanced-search-container input[type=radio]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#check-advanced{display:none}#check-advanced:checked~#advanced-search-container{display:block}.advanced{padding:0;margin-top:.3rem;text-align:right}.advanced label,.advanced select{cursor:pointer}.cursor-text{cursor:text!important}.cursor-pointer{cursor:pointer!important}pre,code{font-family:'Ubuntu Mono','Courier New','Lucida Console',monospace!important}.lineno{margin-right:5px}.highlight .hll{background-color:#ffc}.highlight{background:#f8f8f8}.highlight .c{color:#556366;font-style:italic}.highlight .err{border:1px solid #ffa92f}.highlight .k{color:#BE74D5;font-weight:700}.highlight .o{color:#d19a66}.highlight .cm{color:#556366;font-style:italic}.highlight .cp{color:#bc7a00}.highlight .c1{color:#556366;font-style:italic}.highlight .cs{color:#556366;font-style:italic}.highlight .gd{color:#a00000}.highlight .ge{font-style:italic}.highlight .gr{color:red}.highlight .gh{color:navy;font-weight:700}.highlight .gi{color:#00a000}.highlight .go{color:#888}.highlight .gp{color:navy;font-weight:700}.highlight .gs{font-weight:700}.highlight .gu{color:purple;font-weight:700}.highlight .gt{color:#04d}.highlight .kc{color:#BE74D5;font-weight:700}.highlight .kd{color:#BE74D5;font-weight:700}.highlight .kn{color:#BE74D5;font-weight:700}.highlight .kp{color:#be74d5}.highlight .kr{color:#BE74D5;font-weight:700}.highlight .kt{color:#d46c72}.highlight .m{color:#d19a66}.highlight .s{color:#86c372}.highlight .na{color:#7d9029}.highlight .nb{color:#be74d5}.highlight .nc{color:#61AFEF;font-weight:700}.highlight .no{color:#d19a66}.highlight .nd{color:#a2f}.highlight .ni{color:#999;font-weight:700}.highlight .ne{color:#D2413A;font-weight:700}.highlight .nf{color:#61afef}.highlight .nl{color:#a0a000}.highlight .nn{color:#61AFEF;font-weight:700}.highlight .nt{color:#BE74D5;font-weight:700}.highlight .nv{color:#dfc06f}.highlight .ow{color:#A2F;font-weight:700}.highlight .w{color:#d7dae0}.highlight .mf{color:#d19a66}.highlight .mh{color:#d19a66}.highlight .mi{color:#d19a66}.highlight .mo{color:#d19a66}.highlight .sb{color:#86c372}.highlight .sc{color:#86c372}.highlight .sd{color:#86C372;font-style:italic}.highlight .s2{color:#86c372}.highlight .se{color:#B62;font-weight:700}.highlight .sh{color:#86c372}.highlight .si{color:#B68;font-weight:700}.highlight .sx{color:#be74d5}.highlight .sr{color:#b68}.highlight .s1{color:#86c372}.highlight .ss{color:#dfc06f}.highlight .bp{color:#be74d5}.highlight .vc{color:#dfc06f}.highlight .vg{color:#dfc06f}.highlight .vi{color:#dfc06f}.highlight .il{color:#d19a66}.highlight .lineno{-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default;color:#556366}.highlight .lineno::selection{background:0 0}.highlight .lineno::-moz-selection{background:0 0}.highlight pre{background-color:#282C34;color:#D7DAE0;border:none;margin-bottom:25px;font-size:15px;padding:20px 10px}.highlight{font-weight:700}.table>tbody>tr>td,.table>tbody>tr>th{vertical-align:middle!important}.nav-tabs.nav-justified{margin-bottom:20px}p{margin:10px 0}input.cursor-text{margin:10px 0}
\ No newline at end of file
+.searx-navbar{background:#29314d;height:2.3rem;font-size:1.3rem;line-height:1.3rem;padding:.5rem;font-weight:700;margin-bottom:.8rem}.searx-navbar a,.searx-navbar a:hover{margin-right:2rem;color:#fff;text-decoration:none}.searx-navbar .instance a{color:#01d7d4;margin-left:2rem}#main-logo{margin-top:20vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{opacity:0;position:absolute}.onoffswitch-checkbox:before{content:"";display:inline-block;width:16px;height:16px;margin-right:10px;position:absolute;left:0;bottom:1px;background-color:#fff;border:1px solid #ccc;border-radius:0}.onoffswitch-label{display:block;overflow:hidden;cursor:pointer;border:2px solid #FFF!important;border-radius:50px!important}.onoffswitch-inner{display:block;transition:margin .3s ease-in 0s}.onoffswitch-inner:before,.onoffswitch-inner:after{display:block;float:left;width:50%;height:30px;padding:0;line-height:40px;font-size:20px;box-sizing:border-box;content:"";background-color:#EEE}.onoffswitch-switch{display:block;width:37px;background-color:#01d7d4;position:absolute;top:0;bottom:0;right:0;border:2px solid #FFF;border-radius:50px!important;transition:all .3s ease-in 0s}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-inner{margin-right:0}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-switch{right:71px;background-color:#A1A1A1}.onoffswitch-checkbox:focus+.onoffswitch-label .onoffswitch-switch{border:3px solid #444}.result_header{margin-top:0;margin-bottom:2px;font-size:16px}.result_header .favicon{margin-bottom:-3px}.result_header a{color:#29314d;text-decoration:none}.result_header a:hover{color:#08c}.result_header a:visited{color:#684898}.result_header a .highlight{background-color:#f6f9fa}.result-content,.result-format,.result-source{margin-top:2px;margin-bottom:0;word-wrap:break-word;color:#666;font-size:13px}.result-content .highlight,.result-format .highlight,.result-source .highlight{font-weight:700}.result-source{font-size:10px;float:left}.result-format{font-size:10px;float:right}.external-link{color:#069025;font-size:12px;margin-bottom:15px}.external-link a{margin-right:3px}.result-default,.result-code,.result-torrent,.result-videos,.result-map{clear:both;padding:.5em 4px}.result-default:hover,.result-code:hover,.result-torrent:hover,.result-videos:hover,.result-map:hover{background-color:#f6f9fa}.result-images{float:left!important;width:24%;margin:.5%}.result-images a{display:block;width:100%;background-size:cover}.img-thumbnail{margin:5px;max-height:128px;min-height:128px}.result-videos{clear:both}.result-videos hr{margin:5px 0 15px 0}.result-videos .collapse{width:100%}.result-videos .in{margin-bottom:8px}.result-torrent{clear:both}.result-torrent b{margin-right:5px;margin-left:5px}.result-torrent .seeders{color:#2ecc71}.result-torrent .leechers{color:#f35e77}.result-map{clear:both}.result-code{clear:both}.result-code .code-fork,.result-code .code-fork a{color:#666}.suggestion_item{margin:2px 5px;max-width:100%}.suggestion_item .btn{max-width:100%;white-space:normal;word-wrap:break-word;text-align:left}.result_download{margin-right:5px}#pagination{margin-top:30px;padding-bottom:60px}.label-default{color:#a4a4a4;background:0 0}.result .text-muted small{word-wrap:break-word}.modal-wrapper{box-shadow:0 5px 15px rgba(0,0,0,.5)}.modal-wrapper{background-clip:padding-box;background-color:#fff;border:1px solid rgba(0,0,0,.2);border-radius:6px;box-shadow:0 3px 9px rgba(0,0,0,.5);outline:0 none;position:relative}@media screen and (max-width:75em){.img-thumbnail{object-fit:cover}}.infobox .panel-heading{background-color:#f6f9fa}.infobox .panel-heading .panel-title{font-weight:700}.infobox p{font-family:"DejaVu Serif",Georgia,Cambria,"Times New Roman",Times,serif!important;font-style:italic}.infobox .btn{background-color:#2ecc71;border:none}.infobox .btn a{color:#fff;margin:5px}.infobox .infobox_part{margin-bottom:20px;word-wrap:break-word;table-layout:fixed}.infobox .infobox_part:last-child{margin-bottom:0}.search_categories,#categories{text-transform:capitalize;margin-bottom:.5rem;display:flex;flex-wrap:wrap;flex-flow:row wrap;align-content:stretch}.search_categories label,#categories label,.search_categories .input-group-addon,#categories .input-group-addon{flex-grow:1;flex-basis:auto;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-top:.4rem;text-align:center;min-width:50px}.search_categories label:last-child,#categories label:last-child,.search_categories .input-group-addon:last-child,#categories .input-group-addon:last-child{border-right:#ddd 1px solid}.search_categories input[type=checkbox]:checked+label,#categories input[type=checkbox]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#main-logo{margin-top:10vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}#q{box-shadow:none;border-right:none;border-color:#a4a4a4}#search_form .input-group-btn .btn{border-color:#a4a4a4}#search_form .input-group-btn .btn:hover{background-color:#2ecc71;color:#fff}.custom-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;color:#666;background:url(data:image/png;base64,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) 96% no-repeat}.search-margin{margin-bottom:.6em}.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px 1px 1px 1px);clip:rect(1px,1px,1px,1px);white-space:nowrap}#advanced-search-container{display:none;text-align:left;margin-bottom:1rem;clear:both}#advanced-search-container label,#advanced-search-container .input-group-addon{font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-right:.7rem;padding-left:.7rem}#advanced-search-container label:last-child,#advanced-search-container .input-group-addon:last-child{border-right:#ddd 1px solid}#advanced-search-container input[type=radio]{display:none}#advanced-search-container input[type=radio]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#check-advanced:focus+label{text-decoration:underline}#check-advanced:checked~#advanced-search-container{display:block}.advanced{padding:0;margin-top:.3rem;text-align:right}.advanced label,.advanced select{cursor:pointer}.cursor-text{cursor:text!important}.cursor-pointer{cursor:pointer!important}pre,code{font-family:'Ubuntu Mono','Courier New','Lucida Console',monospace!important}.lineno{margin-right:5px}.highlight .hll{background-color:#ffc}.highlight{background:#f8f8f8}.highlight .c{color:#556366;font-style:italic}.highlight .err{border:1px solid #ffa92f}.highlight .k{color:#BE74D5;font-weight:700}.highlight .o{color:#d19a66}.highlight .cm{color:#556366;font-style:italic}.highlight .cp{color:#bc7a00}.highlight .c1{color:#556366;font-style:italic}.highlight .cs{color:#556366;font-style:italic}.highlight .gd{color:#a00000}.highlight .ge{font-style:italic}.highlight .gr{color:red}.highlight .gh{color:navy;font-weight:700}.highlight .gi{color:#00a000}.highlight .go{color:#888}.highlight .gp{color:navy;font-weight:700}.highlight .gs{font-weight:700}.highlight .gu{color:purple;font-weight:700}.highlight .gt{color:#04d}.highlight .kc{color:#BE74D5;font-weight:700}.highlight .kd{color:#BE74D5;font-weight:700}.highlight .kn{color:#BE74D5;font-weight:700}.highlight .kp{color:#be74d5}.highlight .kr{color:#BE74D5;font-weight:700}.highlight .kt{color:#d46c72}.highlight .m{color:#d19a66}.highlight .s{color:#86c372}.highlight .na{color:#7d9029}.highlight .nb{color:#be74d5}.highlight .nc{color:#61AFEF;font-weight:700}.highlight .no{color:#d19a66}.highlight .nd{color:#a2f}.highlight .ni{color:#999;font-weight:700}.highlight .ne{color:#D2413A;font-weight:700}.highlight .nf{color:#61afef}.highlight .nl{color:#a0a000}.highlight .nn{color:#61AFEF;font-weight:700}.highlight .nt{color:#BE74D5;font-weight:700}.highlight .nv{color:#dfc06f}.highlight .ow{color:#A2F;font-weight:700}.highlight .w{color:#d7dae0}.highlight .mf{color:#d19a66}.highlight .mh{color:#d19a66}.highlight .mi{color:#d19a66}.highlight .mo{color:#d19a66}.highlight .sb{color:#86c372}.highlight .sc{color:#86c372}.highlight .sd{color:#86C372;font-style:italic}.highlight .s2{color:#86c372}.highlight .se{color:#B62;font-weight:700}.highlight .sh{color:#86c372}.highlight .si{color:#B68;font-weight:700}.highlight .sx{color:#be74d5}.highlight .sr{color:#b68}.highlight .s1{color:#86c372}.highlight .ss{color:#dfc06f}.highlight .bp{color:#be74d5}.highlight .vc{color:#dfc06f}.highlight .vg{color:#dfc06f}.highlight .vi{color:#dfc06f}.highlight .il{color:#d19a66}.highlight .lineno{-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default;color:#556366}.highlight .lineno::selection{background:0 0}.highlight .lineno::-moz-selection{background:0 0}.highlight pre{background-color:#282C34;color:#D7DAE0;border:none;margin-bottom:25px;font-size:15px;padding:20px 10px}.highlight{font-weight:700}.table>tbody>tr>td,.table>tbody>tr>th{vertical-align:middle!important}.nav-tabs.nav-justified{margin-bottom:20px}p{margin:10px 0}input.cursor-text{margin:10px 0}
\ No newline at end of file
diff --git a/searx/static/themes/oscar/less/logicodev/advanced.less b/searx/static/themes/oscar/less/logicodev/advanced.less
index 4c3827b30..b8e10de4d 100644
--- a/searx/static/themes/oscar/less/logicodev/advanced.less
+++ b/searx/static/themes/oscar/less/logicodev/advanced.less
@@ -31,8 +31,8 @@
     }
 }
 
-#check-advanced {
-    display: none;
+#check-advanced:focus + label {
+    text-decoration: underline;
 }
 
 #check-advanced:checked ~ #advanced-search-container {
diff --git a/searx/static/themes/oscar/less/logicodev/onoff.less b/searx/static/themes/oscar/less/logicodev/onoff.less
index f47189216..fbd2983eb 100644
--- a/searx/static/themes/oscar/less/logicodev/onoff.less
+++ b/searx/static/themes/oscar/less/logicodev/onoff.less
@@ -9,7 +9,21 @@
     -ms-user-select: none;
 }
 .onoffswitch-checkbox {
-    display: none;
+    opacity: 0;
+    position: absolute;
+}
+.onoffswitch-checkbox:before {
+    content: "";
+    display: inline-block;
+    width: 16px;
+    height: 16px;
+    margin-right: 10px;
+    position: absolute;
+    left: 0;
+    bottom: 1px;
+    background-color: #fff;
+    border: 1px solid #ccc;
+    border-radius: 0px;
 }
 .onoffswitch-label {
     display: block;
@@ -44,7 +58,7 @@
     top: 0;
     bottom: 0;
     right: 0px;
-    border: 2px solid #FFFFFF !important;
+    border: 2px solid #FFFFFF;
     border-radius: 50px !important;
     transition: all 0.3s ease-in 0s;
 }
@@ -55,3 +69,6 @@
     right: 71px;
     background-color: #A1A1A1;
 }
+.onoffswitch-checkbox:focus + .onoffswitch-label .onoffswitch-switch {
+    border: 3px solid #444444;
+}
diff --git a/searx/static/themes/oscar/less/logicodev/search.less b/searx/static/themes/oscar/less/logicodev/search.less
index d65e30563..ff94bfefb 100644
--- a/searx/static/themes/oscar/less/logicodev/search.less
+++ b/searx/static/themes/oscar/less/logicodev/search.less
@@ -77,4 +77,14 @@ Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
 
 .search-margin {
     margin-bottom: 0.6em;
-}
\ No newline at end of file
+}
+
+.visually-hidden {
+    position: absolute !important;
+    height: 1px;
+    width: 1px;
+    overflow: hidden;
+    clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
+    clip: rect(1px, 1px, 1px, 1px);
+    white-space: nowrap; /* added line */
+}
diff --git a/searx/templates/__common__/about.html b/searx/templates/__common__/about.html
index d3e8d06a6..9741b5162 100644
--- a/searx/templates/__common__/about.html
+++ b/searx/templates/__common__/about.html
@@ -59,12 +59,16 @@
 
   <h2 id='add to browser'>How to set as the default search engine?</h2>
 
-  <dt>Firefox</dt>
+  <p>
+    Searx supports <a href="https://github.com/dewitt/opensearch/blob/master/opensearch-1-1-draft-6.md">OpenSearch</a>.
+    For more information on changing your default search engine, see your browser's documentation:
+  </p>
 
-  <dd>
-    <a href="#" onclick="window.external.AddSearchProvider(window.location.protocol + '//' + window.location.host + '{{ url_for('opensearch') }}');">Install</a>
-    searx as a search engine on any version of Firefox! (javascript required)
-  </dd>
+  <ul>
+    <li><a href="https://support.mozilla.org/en-US/kb/add-or-remove-search-engine-firefox">Firefox</a></li>
+    <li><a href="https://support.microsoft.com/en-us/help/4028574/microsoft-edge-change-the-default-search-engine" >Microsoft Egde</a></li>
+    <li>Chrome based browsers <a href="https://www.chromium.org/tab-to-search">only add websites that the user navigates to without a path.</a>
+  </ul>
 
   <h2>Where to find anonymous usage statistics of this instance ?</h2>
 
diff --git a/searx/templates/oscar/advanced.html b/searx/templates/oscar/advanced.html
index bf5f86324..0b13d50d6 100644
--- a/searx/templates/oscar/advanced.html
+++ b/searx/templates/oscar/advanced.html
@@ -1,4 +1,4 @@
-<input type="checkbox" name="advanced_search" id="check-advanced" {% if advanced_search %} checked="checked"{% endif %}>
+<input type="checkbox" name="advanced_search" class="visually-hidden" id="check-advanced" {% if advanced_search %} checked="checked"{% endif %}>
 <label for="check-advanced">{{- "" -}}
     <span class="glyphicon glyphicon-cog"></span>
     {{- _('Advanced settings') -}}
diff --git a/searx/templates/oscar/base.html b/searx/templates/oscar/base.html
index 839619976..a3bfa5249 100644
--- a/searx/templates/oscar/base.html
+++ b/searx/templates/oscar/base.html
@@ -1,6 +1,6 @@
 {% from 'oscar/macros.html' import icon %}
 <!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"{% if rtl %} dir="rtl"{% endif %}>
+<html xmlns="http://www.w3.org/1999/xhtml" lang="{{ preferences.get_value('locale') }}" xml:lang="{{ preferences.get_value('locale') }}"{% if rtl %} dir="rtl"{% endif %}>
 <head>
     <meta charset="UTF-8" />
     <meta name="description" content="searx - a privacy-respecting, hackable metasearch engine" />
@@ -8,7 +8,7 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="generator" content="searx/{{ searx_version }}">
     <meta name="referrer" content="no-referrer">
-    <meta name="viewport" content="width=device-width, initial-scale=1 , maximum-scale=1.0, user-scalable=1" />
+    <meta name="viewport" content="width=device-width, initial-scale=1 , maximum-scale=2.0, user-scalable=1" />
     {% block meta %}{% endblock %}
     <script src="{{ url_for('js_translations') }}"></script>
     <title>{% block title %}{% endblock %}{{ instance_name }}</title>
@@ -42,7 +42,7 @@
         <style type="text/css">
             .tab-content > .active_if_nojs, .active_if_nojs {display: block !important; visibility: visible !important;}
             .margin_top_if_nojs {margin-top: 20px;}
-            .hide_if_nojs {display: none !important;overflow:none !important;}
+            .hide_if_nojs {display: none !important;overflow: hidden !important;}
             .disabled_if_nojs {pointer-events: none; cursor: default; text-decoration: line-through;}
         </style>
     </noscript>
diff --git a/searx/templates/oscar/index.html b/searx/templates/oscar/index.html
index b941f5f20..48c49d64a 100644
--- a/searx/templates/oscar/index.html
+++ b/searx/templates/oscar/index.html
@@ -6,10 +6,10 @@
             {% if cookies['oscar-style'] == 'pointhi' %}
                 <h1 class="text-hide center-block"><img class="center-block img-responsive" src="{{ url_for('static', filename='img/searx_logo.png') }}" alt="searx logo"/>searx</h1>
             {% else %}
-                <h1 class="text-hide center-block" id="main-logo">
+                <div class="text-hide center-block" id="main-logo">
                     <img class="center-block img-responsive" src="{{ url_for('static', filename='img/logo_searx_a.png') }}" alt="searx logo" />
                     searx
-                </h1>
+                </div>
             {% endif %}
         </div>
     </div>
diff --git a/searx/templates/oscar/infobox.html b/searx/templates/oscar/infobox.html
index 04f2d5f22..6ae7965b6 100644
--- a/searx/templates/oscar/infobox.html
+++ b/searx/templates/oscar/infobox.html
@@ -5,7 +5,7 @@
         {% for u in infobox.urls %}{% if u.official %} <a href="{{ u.url }}">{{ u.domain }}</a>{% endif %}{% endfor %}
     </div>
     <div class="panel-body">
-        {% if infobox.img_src %}<img class="img-responsive center-block infobox_part" src="{{ image_proxify(infobox.img_src) }}" alt="{{ infobox.infobox }}" />{% endif %}
+        {% if infobox.img_src %}<img class="img-responsive center-block infobox_part" src="{{ image_proxify(infobox.img_src) }}" />{% endif %}
 
         {% if infobox.content %}<bdi><p class="infobox_part">{{ infobox.content | safe }}</p></bdi>{% endif %}
 
diff --git a/searx/templates/oscar/languages.html b/searx/templates/oscar/languages.html
index 5aff9f918..9c00c9cea 100644
--- a/searx/templates/oscar/languages.html
+++ b/searx/templates/oscar/languages.html
@@ -1,3 +1,4 @@
+<label class="visually-hidden" for="language">{{ _('Language') }}</label>
 <select class="language custom-select form-control" id="language" name="language" accesskey="l">
   <option value="all" {% if current_language == 'all' %}selected="selected"{% endif %}>{{ _('Default language') }}</option>
 {%- for lang_id,lang_name,country_name,english_name in language_codes | sort(attribute=1) -%}
diff --git a/searx/templates/oscar/macros.html b/searx/templates/oscar/macros.html
index d2d1dc643..58f966997 100644
--- a/searx/templates/oscar/macros.html
+++ b/searx/templates/oscar/macros.html
@@ -8,34 +8,34 @@
     <img width="32" height="32" class="favicon" src="{{ url_for('static', filename='themes/oscar/img/icons/' + favicon + '.png') }}" alt="{{ favicon }}" />
 {%- endmacro %}
 
-{%- macro result_link(url, title, classes='') -%}
-<a href="{{ url }}" {% if classes %}class="{{ classes }}" {% endif %}{% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %}>{{ title }}</a>
+{%- macro result_link(url, title, classes='', id='') -%}
+<a href="{{ url }}" {% if classes %}class="{{ classes }}" {% endif %}{% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %}{% if id %} aria-labelledby="result-{{id}}"{%endif%}>{{ title }}</a>
 {%- endmacro -%}
 
 <!-- Draw result header -->
-{% macro result_header(result, favicons) -%}
-<h4 class="result_header">{% if result.engine~".png" in favicons %}{{ draw_favicon(result.engine) }} {% endif %}{% if result.url %}{{ result_link(result.url, result.title|safe) }}{% else %}{{ result.title|safe}}{% endif %}</h4>
+{% macro result_header(result, favicons, id) -%}
+<h4 class="result_header" id="result-{{id}}">{% if result.engine~".png" in favicons %}{{ draw_favicon(result.engine) }} {% endif %}{% if result.url %}{{ result_link(result.url, result.title|safe, id=id) }}{% else %}{{ result.title|safe}}{% endif %}</h4>
 {%- endmacro %}
 
 <!-- Draw result sub header -->
-{% macro result_sub_header(result) -%}
+{% macro result_sub_header(result, id) -%}
     {% if result.publishedDate %}<time class="text-muted" datetime="{{ result.pubdate }}" >{{ result.publishedDate }}</time>{% endif %}
-    {% if result.magnetlink %}<small> &bull; {{ result_link(result.magnetlink, icon('magnet') + _('magnet link'), "magnetlink") }}</small>{% endif %}
-    {% if result.torrentfile %}<small> &bull; {{ result_link(result.torrentfile, icon('download-alt') + _('torrent file'), "torrentfile") }}</small>{% endif %}
+    {% if result.magnetlink %}<small> &bull; {{ result_link(result.magnetlink, icon('magnet') + _('magnet link'), "magnetlink", id) }}</small>{% endif %}
+    {% if result.torrentfile %}<small> &bull; {{ result_link(result.torrentfile, icon('download-alt') + _('torrent file'), "torrentfile", id) }}</small>{% endif %}
 {%- endmacro %}
 
 <!-- Draw result footer -->
-{% macro result_footer(result) -%}
+{% macro result_footer(result, id) -%}
     <div class="clearfix"></div>{{- "" -}}
     <div class="pull-right">
         {%- for engine in result.engines -%}
             <span class="label label-default">{{ engine }}</span>
         {%- endfor -%}
         {%- if result.url -%}
-        <small>{{ result_link("https://web.archive.org/web/" + result.url, icon('link') + _('cached'), "text-info") }}</small>
+        <small>{{ result_link("https://web.archive.org/web/" + result.url, icon('link') + _('cached'), "text-info", id) }}</small>
         {%- endif -%}
         {%- if proxify -%}
-        <small>{{ result_link(proxify(result.url), icon('sort') + _('proxied'), "text-info") }}</small>
+        <small>{{ result_link(proxify(result.url), icon('sort') + _('proxied'), "text-info", id) }}</small>
         {%- endif -%}
     </div>
     {%- if result.pretty_url -%}
@@ -44,31 +44,31 @@
 {%- endmacro %}
 
 <!-- Draw result footer -->
-{% macro result_footer_rtl(result) -%}
+{% macro result_footer_rtl(result, id) -%}
     <div class="clearfix"></div>{{- "" -}}
     {% for engine in result.engines -%}
         <span class="label label-default">{{ engine }}</span>
     {%- endfor %}
     {%- if result.url -%}
-    <small>{{ result_link("https://web.archive.org/web/" + result.url, icon('link') + _('cached'), "text-info") }}</small>
+    <small>{{ result_link("https://web.archive.org/web/" + result.url, icon('link') + _('cached'), "text-info", id) }}</small>
     {%- endif -%}
     {% if proxify -%}
-    <small>{{ result_link(proxify(result.url), icon('sort') + _('proxied'), "text-info") }}</small>
+    <small>{{ result_link(proxify(result.url), icon('sort') + _('proxied'), "text-info", id) }}</small>
     {%- endif %}
     {%- if result.pretty_url -%}
     <div class="external-link">{{ result.pretty_url }}</div>
     {%- endif %}
 {%- endmacro %}
 
-{% macro preferences_item_header(info, label, rtl) -%}
+{% macro preferences_item_header(info, label, rtl, id) -%}
     {% if rtl %}
     <div class="row form-group">
-        <label class="col-sm-3 col-md-2 pull-right">{{ label }}</label>
+        <label class="col-sm-3 col-md-2 pull-right"{% if id %} for="{{id}}"{% endif %}>{{ label }}</label>
         <span class="col-sm-5 col-md-6 help-block pull-left">{{ info }}</span>
         <div class="col-sm-4 col-md-4">
     {% else %}
     <div class="row form-group">
-        <label class="col-sm-3 col-md-2">{{ label }}</label>
+        <label class="col-sm-3 col-md-2"{% if id %} for="{{id}}"{% endif %}>{{ label }}</label>
         <div class="col-sm-4 col-md-4">
     {% endif %}
 {%- endmacro %}
@@ -91,6 +91,7 @@
             <span class="onoffswitch-inner"></span>
             <span class="onoffswitch-switch"></span>
         </label>
+        <label class="visually-hidden" for="{{ id }}">{{ _('Allow') }}</label>
     </div>
 {%- endmacro %}
 
diff --git a/searx/templates/oscar/preferences.html b/searx/templates/oscar/preferences.html
index 4b1f279bd..d28589ae8 100644
--- a/searx/templates/oscar/preferences.html
+++ b/searx/templates/oscar/preferences.html
@@ -30,9 +30,9 @@
                         <div class="col-sm-11 col-md-10">
                             {% include 'oscar/categories.html' %}
                         </div>
-                        <label class="col-sm-3 col-md-2">{{ _('Default categories') }}</label>
+                        <label class="col-sm-3 col-md-2" for="categories">{{ _('Default categories') }}</label>
                         {% else %}
-                        <label class="col-sm-3 col-md-2">{{ _('Default categories') }}</label>
+                        <label class="col-sm-3 col-md-2" for="categories">{{ _('Default categories') }}</label>
                         <div class="col-sm-11 col-md-10 search-categories">
                             {% include 'oscar/categories.html' %}
                         </div>
@@ -40,14 +40,14 @@
                     </div>
                     {% set language_label = _('Search language') %}
                     {% set language_info = _('What language do you prefer for search?') %}
-                    {{ preferences_item_header(language_info, language_label, rtl) }}
+                    {{ preferences_item_header(language_info, language_label, rtl, 'language') }}
                                                 {% include 'oscar/languages.html' %}
                     {{ preferences_item_footer(language_info, language_label, rtl) }}
 
                     {% set locale_label = _('Interface language') %}
                     {% set locale_info = _('Change the language of the layout') %}
-                    {{ preferences_item_header(locale_info, locale_label, rtl) }}
-                        <select class="form-control" name='locale'>
+                    {{ preferences_item_header(locale_info, locale_label, rtl, 'locale') }}
+                        <select class="form-control" name="locale" id="locale">
                             {% for locale_id,locale_name in locales.items() | sort %}
                             <option value="{{ locale_id }}" {% if locale_id == current_locale %}selected="selected"{% endif %}>{{ locale_name }}</option>
                             {% endfor %}
@@ -56,8 +56,8 @@
 
                     {% set autocomplete_label = _('Autocomplete') %}
                     {% set autocomplete_info = _('Find stuff as you type') %}
-                    {{ preferences_item_header(autocomplete_info, autocomplete_label, rtl) }}
-                        <select class="form-control" name="autocomplete">
+                    {{ preferences_item_header(autocomplete_info, autocomplete_label, rtl, 'autocomplete') }}
+                        <select class="form-control" name="autocomplete" id="autocomplete">
                             <option value=""> - </option>
                             {% for backend in autocomplete_backends %}
                             <option value="{{ backend }}" {% if backend == autocomplete %}selected="selected"{% endif %}>{{ backend }}</option>
@@ -67,8 +67,8 @@
 
                     {% set image_proxy_label = _('Image proxy') %}
                     {% set image_proxy_info = _('Proxying image results through searx') %}
-                    {{ preferences_item_header(image_proxy_info, image_proxy_label, rtl) }}
-                        <select class="form-control" name='image_proxy'>
+                    {{ preferences_item_header(image_proxy_info, image_proxy_label, rtl, 'image_proxy') }}
+                        <select class="form-control" name="image_proxy" id="image_proxy">
                             <option value="1" {% if image_proxy  %}selected="selected"{% endif %}>{{ _('Enabled') }}</option>
                             <option value="" {% if not image_proxy %}selected="selected"{% endif %}>{{ _('Disabled')}}</option>
                         </select>
@@ -76,8 +76,8 @@
 
                     {% set method_label = _('Method') %}
                     {% set method_info = _('Change how forms are submited, <a href="http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Request_methods" rel="external">learn more about request methods</a>') %}
-                    {{ preferences_item_header(method_info, method_label, rtl) }}
-                        <select class="form-control" name='method'>
+                    {{ preferences_item_header(method_info, method_label, rtl, 'method') }}
+                        <select class="form-control" name="method" id="method">
                             <option value="POST" {% if method == 'POST' %}selected="selected"{% endif %}>POST</option>
                             <option value="GET" {% if method == 'GET' %}selected="selected"{% endif %}>GET</option>
                         </select>
@@ -85,8 +85,8 @@
 
                     {% set safesearch_label = _('SafeSearch') %}
                     {% set safesearch_info = _('Filter content') %}
-                    {{ preferences_item_header(safesearch_info, safesearch_label, rtl) }}
-                        <select class="form-control" name='safesearch'>
+                    {{ preferences_item_header(safesearch_info, safesearch_label, rtl, 'safesearch') }}
+                        <select class="form-control" name="safesearch" id="safesearch">
                             <option value="2" {% if safesearch == '2' %}selected="selected"{% endif %}>{{ _('Strict') }}</option>
                             <option value="1" {% if safesearch == '1' %}selected="selected"{% endif %}>{{ _('Moderate') }}</option>
                             <option value="0" {% if safesearch == '0' %}selected="selected"{% endif %}>{{ _('None') }}</option>
@@ -95,16 +95,16 @@
 
                     {% set theme_label = _('Themes') %}
                     {% set theme_info = _('Change searx layout') %}
-                    {{ preferences_item_header(theme_info, theme_label, rtl) }}
-                        <select class="form-control" name="theme">
+                    {{ preferences_item_header(theme_info, theme_label, rtl, 'theme') }}
+                        <select class="form-control" name="theme" id="theme">
                             {% for name in themes %}
                             <option value="{{ name }}" {% if name == theme %}selected="selected"{% endif %}>{{ name }}</option>
                             {% endfor %}
                         </select>
                     {{ preferences_item_footer(theme_info, theme_label, rtl) }}
 
-                    {{ preferences_item_header(_('Choose style for this theme'), _('Style'), rtl) }}
-                        <select class="form-control" name='oscar-style'>
+                    {{ preferences_item_header(_('Choose style for this theme'), _('Style'), rtl, 'oscar_style') }}
+                        <select class="form-control" name="oscar-style" id="oscar_style">
                             <option value="logicodev" >Logicodev</option>
                             <option value="pointhi" {% if preferences.get_value('oscar-style') == 'pointhi' %}selected="selected"{% endif %}>Pointhi</option>
                             <option value="logicodev-dark" {% if preferences.get_value('oscar-style') == 'logicodev-dark' %}selected="selected"{% endif %}>Logicodev dark</option>
@@ -113,8 +113,8 @@
 
                     {% set label = _('Results on new tabs') %}
                     {% set info = _('Open result links on new browser tabs') %}
-                    {{ preferences_item_header(info, label, rtl) }}
-                        <select class="form-control" name='results_on_new_tab'>
+                    {{ preferences_item_header(info, label, rtl, 'results_on_new_tab') }}
+                        <select class="form-control" name="results_on_new_tab" id="results_on_new_tab">
                             <option value="1" {% if results_on_new_tab %}selected="selected"{% endif %}>{{ _('On') }}</option>
                             <option value="0" {% if not results_on_new_tab %}selected="selected"{% endif %}>{{ _('Off')}}</option>
                         </select>
@@ -122,8 +122,8 @@
 
                     {% set label = _('Open Access DOI resolver') %}
                     {% set info = _('Redirect to open-access versions of publications when available (plugin required)') %}
-                    {{ preferences_item_header(info, label, rtl) }}
-                        <select class="form-control" id='doi_resolver' name='doi_resolver'>
+                    {{ preferences_item_header(info, label, rtl, 'doi_resolver') }}
+                        <select class="form-control" name="doi_resolver" id="doi_resolver">
                             {% for doi_resolver_name,doi_resolver_url in doi_resolvers.items() %}
                             <option value="{{ doi_resolver_name }}" {% if doi_resolver_name == current_doi_resolver %}selected="selected"{% endif %}>
                                     {{ doi_resolver_name }} - {{ doi_resolver_url }}
@@ -134,8 +134,8 @@
 
                     {% set label = _('Engine tokens') %}
                     {% set info = _('Access tokens for private engines') %}
-                    {{ preferences_item_header(info, label, rtl) }}
-                        <input class="form-control" id='tokens' name='tokens' value='{{ preferences.tokens.get_value() }}'/>
+                    {{ preferences_item_header(info, label, rtl, 'tokens') }}
+                        <input class="form-control" id="tokens" name="tokens" value='{{ preferences.tokens.get_value() }}'/>
                     {{ preferences_item_footer(info, label, rtl) }}
                 </div>
                 </fieldset>
@@ -173,23 +173,23 @@
                           <table class="table table-hover table-condensed table-striped">
                                 <tr>
                                     {% if not rtl %}
-                                    <th>{{ _("Allow") }}</th>
-                                    <th>{{ _("Engine name") }}</th>
-                                    <th>{{ _("Shortcut") }}</th>
-                                    <th>{{ _("Selected language") }}</th>
-                                    <th>{{ _("SafeSearch") }}</th>
-                                    <th>{{ _("Time range") }}</th>
-                                    <th>{{ _("Avg. time") }}</th>
-                                    <th>{{ _("Max time") }}</th>
+                                    <th scope="col">{{ _("Allow") }}</th>
+                                    <th scope="col">{{ _("Engine name") }}</th>
+                                    <th scope="col">{{ _("Shortcut") }}</th>
+                                    <th scope="col">{{ _("Selected language") }}</th>
+                                    <th scope="col">{{ _("SafeSearch") }}</th>
+                                    <th scope="col">{{ _("Time range") }}</th>
+                                    <th scope="col">{{ _("Avg. time") }}</th>
+                                    <th scope="col">{{ _("Max time") }}</th>
                                     {% else %}
-                                    <th class="text-right">{{ _("Max time") }}</th>
-                                    <th class="text-right">{{ _("Avg. time") }}</th>
-                                    <th class="text-right">{{ _("Time range") }}</th>
-                                    <th class="text-right">{{ _("SafeSearch") }}</th>
-                                    <th class="text-right">{{ _("Selected language") }}</th>
-                                    <th class="text-right">{{ _("Shortcut") }}</th>
-                                    <th class="text-right">{{ _("Engine name") }}</th>
-                                    <th class="text-right">{{ _("Allow") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Max time") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Avg. time") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Time range") }}</th>
+                                    <th scope="col" class="text-right">{{ _("SafeSearch") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Selected language") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Shortcut") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Engine name") }}</th>
+                                    <th scope="col" class="text-right">{{ _("Allow") }}</th>
                                     {% endif %}
                                 </tr>
                         {% for search_engine in engines_by_category[categ] %}
@@ -199,21 +199,21 @@
                                     <td class="onoff-checkbox">
                                         {{ checkbox_toggle('engine_' + search_engine.name|replace(' ', '_') + '__' + categ|replace(' ', '_'), (search_engine.name, categ) in disabled_engines) }}
                                     </td>
-                                    <th>{{ search_engine.name }}</th>
+                                    <th scope="row">{{ search_engine.name }}</th>
                                     <td class="name">{{ shortcuts[search_engine.name] }}</td>
                                         <td>{{ support_toggle(stats[search_engine.name].supports_selected_language) }}</td>
                                         <td>{{ support_toggle(search_engine.safesearch==True) }}</td>
                                         <td>{{ support_toggle(search_engine.time_range_support==True) }}</td>
-                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_time'] else '' }}">{{ 'N/A' if stats[search_engine.name].time==None else stats[search_engine.name].time }}</td>
-                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_timeout'] else '' }}">{{ search_engine.timeout }}</td>
-                                                                        {% else %}
-                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_timeout'] else '' }}">{{ search_engine.timeout }}</td>
-                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_time'] else '' }}">{{ 'N/A' if stats[search_engine.name].time==None else stats[search_engine.name].time }}</td>
+                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_time'] else '' }}">{% if stats[search_engine.name]['warn_time'] %}{{ icon('exclamation-sign')}} {% endif %}{{ 'N/A' if stats[search_engine.name].time==None else stats[search_engine.name].time }}</td>
+                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_timeout'] else '' }}">{% if stats[search_engine.name]['warn_timeout'] %}{{ icon('exclamation-sign') }} {% endif %}{{ search_engine.timeout }}</td>
+                                    {% else %}
+                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_timeout'] else '' }}">{{ search_engine.timeout }}{% if stats[search_engine.name]['warn_time'] %} {{ icon('exclamation-sign')}}{% endif %}</td>
+                                        <td class="{{ 'danger' if stats[search_engine.name]['warn_time'] else '' }}">{{ 'N/A' if stats[search_engine.name].time==None else stats[search_engine.name].time }}{% if stats[search_engine.name]['warn_time'] %} {{ icon('exclamation-sign')}}{% endif %}</td>
                                         <td>{{ support_toggle(search_engine.time_range_support==True) }}</td>
                                         <td>{{ support_toggle(search_engine.safesearch==True) }}</td>
                                         <td>{{ support_toggle(stats[search_engine.name].supports_selected_language) }}</td>
                                         <td>{{ shortcuts[search_engine.name] }}</td>
-                                    <th>{{ search_engine.name }}</th>
+                                    <th scope="row">{{ search_engine.name }}</th>
                                     <td class="onoff-checkbox">
                                         {{ checkbox_toggle('engine_' + search_engine.name|replace(' ', '_') + '__' + categ|replace(' ', '_'), (search_engine.name, categ) in disabled_engines) }}
                                     </td>
@@ -241,7 +241,7 @@
                                 <h3 class="panel-title">{{ _(plugin.name) }}</h3>
                             </div>
                             <div class="panel-body">
-                                <div class="col-xs-6 col-sm-4 col-md-6">{{ _(plugin.description) }}</div>
+                                <div class="col-xs-6 col-sm-4 col-md-6"><label for="{{'plugin_' + plugin.id}}">{{ _(plugin.description) }}</label></div>
                                 <div class="col-xs-6 col-sm-4 col-md-6">
                                     <div class="onoff-checkbox">
                                     {{ checkbox_toggle('plugin_' + plugin.id, plugin.id not in allowed_plugins) }}
diff --git a/searx/templates/oscar/result_templates/code.html b/searx/templates/oscar/result_templates/code.html
index a1c18a6b7..c7d93e2b3 100644
--- a/searx/templates/oscar/result_templates/code.html
+++ b/searx/templates/oscar/result_templates/code.html
@@ -1,11 +1,11 @@
-{% from 'oscar/macros.html' import result_header, result_sub_header, result_footer, result_footer_rtl, icon %}
+{% from 'oscar/macros.html' import result_header, result_sub_header, result_footer, result_footer_rtl, icon with context%}
 
 {{ result_header(result, favicons) }}
 {{ result_sub_header(result) }}
 
 {% if result.content %}<p class="result-content">{{ result.content|safe }}</p>{% endif %}
 
-{% if result.repository %}<p class="result-content">{{ icon('file') }} <a href="{{ result.repository }}" {% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %}>{{ result.repository }}</a></p>{% endif %}
+{% if result.repository %}<p class="result-content">{{ icon('file') }} <a href="{{ result.repository }}" {% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %} aria-labelledby="result-{{loop.index}}">{{ result.repository }}</a></p>{% endif %}
 
 <div dir="ltr">
 {{ result.codelines|code_highlighter(result.code_language)|safe }}
diff --git a/searx/templates/oscar/result_templates/default.html b/searx/templates/oscar/result_templates/default.html
index 885cbbfa8..bc71d190d 100644
--- a/searx/templates/oscar/result_templates/default.html
+++ b/searx/templates/oscar/result_templates/default.html
@@ -1,10 +1,10 @@
 {% from 'oscar/macros.html' import result_header, result_sub_header, result_footer, result_footer_rtl, icon with context %}
 
-{{- result_header(result, favicons) -}}
-{{- result_sub_header(result) -}}
+{{- result_header(result, favicons, loop.index) -}}
+{{- result_sub_header(result, loop.index) -}}
 
 {%- if result.embedded -%}
-    <small> &bull; <a class="text-info btn-collapse collapsed cursor-pointer media-loader disabled_if_nojs" data-toggle="collapse" data-target="#result-media-{{ index }}" data-btn-text-collapsed="{{ _('show media') }}" data-btn-text-not-collapsed="{{ _('hide media') }}">{{ icon('music') }} {{ _('show media') }}</a></small>
+    <small> &bull; <a class="text-info btn-collapse collapsed cursor-pointer media-loader disabled_if_nojs" data-toggle="collapse" data-target="#result-media-{{ index }}" data-btn-text-collapsed="{{ _('show media') }}" data-btn-text-not-collapsed="{{ _('hide media') }}" aria-labelledby="result-{{loop.index}}">{{ icon('music') }} {{ _('show media') }}</a></small>
 {%- endif -%}
 
 {%- if result.embedded -%}
@@ -16,7 +16,7 @@
 {%- if result.img_src -%}
 <div class="container-fluid">
     <div class="row">
-<img src="{{ image_proxify(result.img_src) }}" alt="{{ result.title|striptags }}" title="{{ result.title|striptags }}" style="width: auto; max-height: 60px; min-height: 60px;" class="col-xs-2 col-sm-4 col-md-4 result-content">
+<img src="{{ image_proxify(result.img_src) }}" title="{{ result.title|striptags }}" style="width: auto; max-height: 60px; min-height: 60px;" class="col-xs-2 col-sm-4 col-md-4 result-content">
 {% if result.content %}<p class="result-content col-xs-8 col-sm-8 col-md-8">{{ result.content|safe }}</p>{% endif -%}
     </div>
 </div>
@@ -25,7 +25,7 @@
 {%- endif -%}
 
 {%- if rtl -%}
-{{ result_footer_rtl(result) }}
+{{ result_footer_rtl(result, loop.index) }}
 {%- else -%}
-{{ result_footer(result) }}
+{{ result_footer(result, loop.index) }}
 {%- endif -%}
diff --git a/searx/templates/oscar/result_templates/images.html b/searx/templates/oscar/result_templates/images.html
index d0a3b7b83..96cdd53bb 100644
--- a/searx/templates/oscar/result_templates/images.html
+++ b/searx/templates/oscar/result_templates/images.html
@@ -1,6 +1,6 @@
-{%- from 'oscar/macros.html' import draw_favicon -%}
+{%- from 'oscar/macros.html' import draw_favicon with context -%}
 
-<a href="{{ result.img_src }}" {% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %} data-toggle="modal" data-target="#modal-{{ index }}-{{pageno}}">{{- "" -}}
+<a href="{{ result.img_src }}" {% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %} data-toggle="modal" data-target="#modal-{{ index }}-{{pageno}}" id="result-{{loop.index}}">{{- "" -}}
     <img src="{% if result.thumbnail_src %}{{ image_proxify(result.thumbnail_src) }}{% else %}{{ image_proxify(result.img_src) }}{% endif %}" alt="{{ result.title|striptags }}" title="{{ result.title|striptags }}" class="img-thumbnail">{{- "" -}}
 </a>
 <div class="modal fade" id="modal-{{ index }}-{{ pageno }}" tabindex="-1" role="dialog" aria-hidden="true">{{- "" -}}
diff --git a/searx/templates/oscar/result_templates/map.html b/searx/templates/oscar/result_templates/map.html
index 712375d7f..be34d65d0 100644
--- a/searx/templates/oscar/result_templates/map.html
+++ b/searx/templates/oscar/result_templates/map.html
@@ -1,7 +1,7 @@
 {% from 'oscar/macros.html' import result_header, result_sub_header, result_footer, result_footer_rtl, icon %}
 
-{{ result_header(result, favicons) }}
-{{ result_sub_header(result) }}
+{{ result_header(result, favicons, loop.index) }}
+{{ result_sub_header(result, loop.index) }}
 
 {% if (result.latitude and result.longitude) or result.boundingbox %}
     <small> &bull; <a class="text-info btn-collapse collapsed searx_init_map cursor-pointer disabled_if_nojs" data-toggle="collapse" data-target="#result-map-{{ index }}" data-leaflet-target="osm-map-{{ index }}" data-map-lon="{{ result.longitude }}" data-map-lat="{{ result.latitude }}" {% if result.boundingbox %}data-map-boundingbox='{{ result.boundingbox|tojson|safe }}'{% endif %} {% if result.geojson %}data-map-geojson='{{ result.geojson|tojson|safe }}'{% endif %} data-btn-text-collapsed="{{ _('show map') }}" data-btn-text-not-collapsed="{{ _('hide map') }}">{{ icon('globe') }} {{ _('show map') }}</a></small>
@@ -66,7 +66,7 @@
 {% endif %}
 
 {% if rtl %}
-{{ result_footer_rtl(result) }}
+{{ result_footer_rtl(result, loop.index) }}
 {% else %}
-{{ result_footer(result) }}
+{{ result_footer(result, loop.index) }}
 {% endif %}
diff --git a/searx/templates/oscar/result_templates/torrent.html b/searx/templates/oscar/result_templates/torrent.html
index 089367e36..0bba61417 100644
--- a/searx/templates/oscar/result_templates/torrent.html
+++ b/searx/templates/oscar/result_templates/torrent.html
@@ -1,7 +1,7 @@
 {% from 'oscar/macros.html' import result_header, result_sub_header, result_footer, result_footer_rtl, icon %}
 
-{{ result_header(result, favicons) }}
-{{ result_sub_header(result) }}
+{{ result_header(result, favicons, loop.index) }}
+{{ result_sub_header(result, loop.index) }}
 
 {% if result.seed is defined %}<p class="result-content">{{ icon('transfer') }} {{ _('Seeder') }} <span class="badge">{{ result.seed }}</span> &bull; {{ _('Leecher') }} <span class="badge">{{ result.leech }}</span>{% endif %}
 {% if result.filesize %}<br />{{ icon('floppy-disk') }} {{ _('Filesize') }} 
@@ -19,7 +19,7 @@
 </p>
 
 {% if rtl %}
-{{ result_footer_rtl(result) }}
+{{ result_footer_rtl(result, loop.index) }}
 {% else %}
-{{ result_footer(result) }}
+{{ result_footer(result, loop.index) }}
 {% endif %}
diff --git a/searx/templates/oscar/result_templates/videos.html b/searx/templates/oscar/result_templates/videos.html
index 51ed5a025..bf02a553a 100644
--- a/searx/templates/oscar/result_templates/videos.html
+++ b/searx/templates/oscar/result_templates/videos.html
@@ -1,10 +1,10 @@
 {% from 'oscar/macros.html' import result_header, result_sub_header, result_footer, result_footer_rtl, icon %}
 
-{{ result_header(result, favicons) }}
-{{ result_sub_header(result) }}
+{{ result_header(result, favicons, loop.index) }}
+{{ result_sub_header(result, loop.index) }}
 
 {% if result.embedded %}
-    <small> &bull; <a class="text-info btn-collapse collapsed cursor-pointer media-loader disabled_if_nojs" data-toggle="collapse" data-target="#result-video-{{ index }}" data-btn-text-collapsed="{{ _('show video') }}" data-btn-text-not-collapsed="{{ _('hide video') }}">{{ icon('film') }} {{ _('show video') }}</a></small>
+    <small> &bull; <a class="text-info btn-collapse collapsed cursor-pointer media-loader disabled_if_nojs" data-toggle="collapse" data-target="#result-video-{{ index }}" data-btn-text-collapsed="{{ _('show video') }}" data-btn-text-not-collapsed="{{ _('hide video') }}" aria-labelledby="result-{{loop.index}}">{{ icon('film') }} {{ _('show video') }}</a></small>
 {% endif %}
 
 {% if result.embedded %}
@@ -15,7 +15,7 @@
 
 <div class="container-fluid">
     <div class="row">
-        <a href="{{ result.url }}" {% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %}><img class="thumbnail col-xs-6 col-sm-4 col-md-4 result-content" src="{{ image_proxify(result.thumbnail) }}" alt="{{ result.title|striptags }} {{ result.engine }}" /></a>
+        <a href="{{ result.url }}" {% if results_on_new_tab %}target="_blank" rel="noopener noreferrer"{% else %}rel="noreferrer"{% endif %}><img class="thumbnail col-xs-6 col-sm-4 col-md-4 result-content" src="{{ image_proxify(result.thumbnail) }}" aria-labelledby="result-{{loop.index}}" /></a>
         {% if result.author %}<p class="col-xs-12 col-sm-8 col-md-8 result-content"><b>{{ _('Author') }}</b>: {{ result.author }}</p>{% endif %}
         {% if result.length %}<p class="col-xs-12 col-sm-8 col-md-8 result-content"><b>{{ _('Length') }}</b>: {{ result.length }}</p>{% endif %}
         {% if result.content %}<p class="col-xs-12 col-sm-8 col-md-8 result-content">{{ result.content|safe }}</p>{% endif %}
@@ -23,7 +23,7 @@
 </div>
 
 {% if rtl %}
-{{ result_footer_rtl(result) }}
+{{ result_footer_rtl(result, loop.index) }}
 {% else %}
-{{ result_footer(result) }}
+{{ result_footer(result, loop.index) }}
 {% endif %}
diff --git a/searx/templates/oscar/time-range.html b/searx/templates/oscar/time-range.html
index fb1c0754b..181b57681 100644
--- a/searx/templates/oscar/time-range.html
+++ b/searx/templates/oscar/time-range.html
@@ -1,3 +1,4 @@
+<label class="visually-hidden" for="time-range">{{ _('Time range') }}</label>
 <select name="time_range" id="time-range" class="custom-select form-control" accesskey="t">{{- "" -}}
     <option id="time-range-anytime" value="" {{ "selected" if time_range=="" or not time_range  else ""}}>
         {{- _('Anytime') -}}
diff --git a/searx/webapp.py b/searx/webapp.py
index 35495a0ff..e1b6bea1c 100755
--- a/searx/webapp.py
+++ b/searx/webapp.py
@@ -335,8 +335,15 @@ def image_proxify(url):
     if not request.preferences.get_value('image_proxy'):
         return url
 
-    if url.startswith('data:image/jpeg;base64,'):
-        return url
+    if url.startswith('data:image/'):
+        # 50 is an arbitrary number to get only the beginning of the image.
+        partial_base64 = url[len('data:image/'):50].split(';')
+        if len(partial_base64) == 2 \
+           and partial_base64[0] in ['gif', 'png', 'jpeg', 'pjpeg', 'webp', 'tiff', 'bmp']\
+           and partial_base64[1].startswith('base64,'):
+            return url
+        else:
+            return None
 
     if settings.get('result_proxy'):
         return proxify(url)
diff --git a/utils/fetch_languages.py b/utils/fetch_languages.py
index ddebb4111..77ec0bf20 100644
--- a/utils/fetch_languages.py
+++ b/utils/fetch_languages.py
@@ -28,10 +28,10 @@ def fetch_supported_languages():
     names.sort()
 
     for engine_name in names:
-        print("fetching languages of engine %s" % engine_name)
-
         if hasattr(engines[engine_name], 'fetch_supported_languages'):
             engines_languages[engine_name] = engines[engine_name].fetch_supported_languages()
+            print("fetched %s languages from engine %s" % (
+                len(engines_languages[engine_name]), engine_name))
             if type(engines_languages[engine_name]) == list:
                 engines_languages[engine_name] = sorted(engines_languages[engine_name])
 
diff --git a/utils/searx.sh b/utils/searx.sh
index 4009fddb0..886b38f8c 100755
--- a/utils/searx.sh
+++ b/utils/searx.sh
@@ -816,47 +816,61 @@ rst-doc() {
 
             case $DIST_ID-$DIST_VERS in
                 ubuntu-*|debian-*)  cat <<EOF
-# init.d --> /usr/share/doc/uwsgi/README.Debian.gz
-# For uWSGI debian uses the LSB init process, this might be changed
-# one day, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833067
-
-create     ${uWSGI_APPS_AVAILABLE}/${SEARX_UWSGI_APP}
-enable:    sudo -H ln -s ${uWSGI_APPS_AVAILABLE}/${SEARX_UWSGI_APP} ${uWSGI_APPS_ENABLED}/
-start:     sudo -H service uwsgi start   ${SEARX_UWSGI_APP%.*}
-restart:   sudo -H service uwsgi restart ${SEARX_UWSGI_APP%.*}
-stop:      sudo -H service uwsgi stop    ${SEARX_UWSGI_APP%.*}
-disable:   sudo -H rm ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+
+.. code:: bash
+
+   # init.d --> /usr/share/doc/uwsgi/README.Debian.gz
+   # For uWSGI debian uses the LSB init process, this might be changed
+   # one day, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833067
+
+   create     ${uWSGI_APPS_AVAILABLE}/${SEARX_UWSGI_APP}
+   enable:    sudo -H ln -s ${uWSGI_APPS_AVAILABLE}/${SEARX_UWSGI_APP} ${uWSGI_APPS_ENABLED}/
+   start:     sudo -H service uwsgi start   ${SEARX_UWSGI_APP%.*}
+   restart:   sudo -H service uwsgi restart ${SEARX_UWSGI_APP%.*}
+   stop:      sudo -H service uwsgi stop    ${SEARX_UWSGI_APP%.*}
+   disable:   sudo -H rm ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+
 EOF
                 ;;
                 arch-*) cat <<EOF
-# systemd --> /usr/lib/systemd/system/uwsgi@.service
-# For uWSGI archlinux uses systemd template units, see
-# - http://0pointer.de/blog/projects/instances.html
-# - https://uwsgi-docs.readthedocs.io/en/latest/Systemd.html#one-service-per-app-in-systemd
-
-create:    ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
-enable:    sudo -H systemctl enable   uwsgi@${SEARX_UWSGI_APP%.*}
-start:     sudo -H systemctl start    uwsgi@${SEARX_UWSGI_APP%.*}
-restart:   sudo -H systemctl restart  uwsgi@${SEARX_UWSGI_APP%.*}
-stop:      sudo -H systemctl stop     uwsgi@${SEARX_UWSGI_APP%.*}
-disable:   sudo -H systemctl disable  uwsgi@${SEARX_UWSGI_APP%.*}
+
+.. code:: bash
+
+   # systemd --> /usr/lib/systemd/system/uwsgi@.service
+   # For uWSGI archlinux uses systemd template units, see
+   # - http://0pointer.de/blog/projects/instances.html
+   # - https://uwsgi-docs.readthedocs.io/en/latest/Systemd.html#one-service-per-app-in-systemd
+
+   create:    ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+   enable:    sudo -H systemctl enable   uwsgi@${SEARX_UWSGI_APP%.*}
+   start:     sudo -H systemctl start    uwsgi@${SEARX_UWSGI_APP%.*}
+   restart:   sudo -H systemctl restart  uwsgi@${SEARX_UWSGI_APP%.*}
+   stop:      sudo -H systemctl stop     uwsgi@${SEARX_UWSGI_APP%.*}
+   disable:   sudo -H systemctl disable  uwsgi@${SEARX_UWSGI_APP%.*}
+
 EOF
                 ;;
                 fedora-*) cat <<EOF
-# systemd --> /usr/lib/systemd/system/uwsgi.service
-# The unit file starts uWSGI in emperor mode (/etc/uwsgi.ini), see
-# - https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html
 
-create:    ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
-restart:   sudo -H touch ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
-disable:   sudo -H rm ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+.. code:: bash
+
+   # systemd --> /usr/lib/systemd/system/uwsgi.service
+   # The unit file starts uWSGI in emperor mode (/etc/uwsgi.ini), see
+   # - https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html
+
+   create:    ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+   restart:   sudo -H touch ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+   disable:   sudo -H rm ${uWSGI_APPS_ENABLED}/${SEARX_UWSGI_APP}
+
 EOF
                 ;;
             esac
             echo -e ".. END searx uwsgi-description $DIST_NAME"
 
             echo -e "\n.. START searx uwsgi-appini $DIST_NAME"
-            eval "echo \"$(< "${TEMPLATES}/${uWSGI_APPS_AVAILABLE}/${SEARX_UWSGI_APP}")\""
+            echo ".. code:: bash"
+            echo
+            eval "echo \"$(< "${TEMPLATES}/${uWSGI_APPS_AVAILABLE}/${SEARX_UWSGI_APP}")\"" | prefix_stdout "  "
             echo -e "\n.. END searx uwsgi-appini $DIST_NAME"
 
         )