Difference between revisions of "Firefox"

From ArchWiki
Jump to: navigation, search
(some cleanup)
m (Plugins: phrasing)
Line 35: Line 35:
To find out what plugins are installed/enabled, enter:
To find out what plugins are installed/enabled, enter:
in the Firefox address bar. Or go to ''Add-ons'' from the Firefox Menu and select the ''Plugins'' tab.
in the Firefox address bar or go to the ''Add-ons'' entry in the Firefox Menu and select the ''Plugins'' tab.
=== GNOME integration ===
=== GNOME Keyring integration ===
Install {{AUR|firefox-gnome-keyring}} from the [[AUR]] to integrate Firefox 3.6.x with [[GNOME Keyring]].
Install {{AUR|firefox-gnome-keyring}} from the [[AUR]] to integrate Firefox 3.6.x with [[GNOME Keyring]].

Revision as of 16:36, 6 October 2012

zh-CN:FirefoxTemplate:Article summary start Template:Article summary text Template:Article summary heading Template:Article summary wiki: Acquiring and installing plugins such as Flash Template:Article summary wiki: Configuration and modifications Template:Article summary end

Firefox is a popular open-source graphical web browser from Mozilla.


Firefox can be installed with the firefox package, available in the official repositories.

There are a number of language packs available for Firefox, other than the standard English. Language packs are usually named as firefox-i18n-languagecode (where languagecode can be any language code, such as de, ja, fr, etc.). For a list of available language packs see this.

If Firefox does not anti-alias and/or hint your fonts, try to install ttf-win7-fontsAUR (preferred) or ttf-ms-fontsAUR and take a look at Font Configuration.


Firefox is well known for its large library of add-ons which can be used to add new features or modify the behavior of existing features of Firefox. You can find new add-ons or manage installed add-ons with Firefox's "Add-ons Manager."

For a list of popular add-ons, see Mozilla's add-on list sorted by popularity.



To find out what plugins are installed/enabled, enter:


in the Firefox address bar or go to the Add-ons entry in the Firefox Menu and select the Plugins tab.

GNOME Keyring integration

Install firefox-gnome-keyringAUR from the AUR to integrate Firefox 3.6.x with GNOME Keyring.

Dictionaries for spell checking

To enable spell checking for a specific language right click on any text field and check the Check Spelling box. To select a language for spell checking to you have right click again and select your language from the Languages sub-menu.

To get more languages just click Add Dictionaries... and select the dictionary you want to install from the list.

Alternatively, you can install the hunspell package, available in the official repositories. You also need to install dictionaries for your language, such as hunspell-fr (for the French language) or hunspell-he (for Hebrew).

Adding Firefox search engines

Search engines can be added to Firefox through normal add-ons, see this page for a list of available search engines.

A very extensive list of search engines can be found here.

Also, you can use the add-to-searchbar extension to add a search to your search bar from any web site, by simply right clicking on the site's search field and selecting Add to Search Bar...

If you want a manual solution, take a look at ~/.mozilla/firefox/xxx.default/searchplugins/ (where xxx is your profile ID).


Install the arch-firefox-search package, available in the official repositories, to add Arch-specific searches (AUR, wiki, forum, etc, as specified by user) to the Firefox search toolbar.

Projects related to Firefox

Firefox derivatives

  • Iceweasel — A fork of Firefox that is being developed by Debian. The main difference is that it does not include any trademarked Mozilla artwork.
http://wiki.debian.org/Iceweasel || iceweaselAUR
  • GNU IceCat — A web browser distributed by the GNU Project. It is made entirely of free software and is compatible with the GNU/Linux operating system and almost all of Firefox's addons.
http://www.gnu.org/software/gnuzilla/ || icecatAUR
  • Swiftfox — A web browser based on Firefox but optimized for some newer Intel and AMD processors.
http://www.getswiftfox.com/ || swiftfox-athlon64AUR swiftfox-prescottAUR swiftfox-i686AUR

Firefox with better KDE integration

with OpenSUSE patch, integrates better with KDE. OpenSUSE's patch and integration of Firefox with KDE is considered the best by many users.
This plugin uses KDE's KParts to embed file viewers into non-KDE browsers
This addon provides further integration with KDE's Oxygen theme, color scheme detection, Faenza icons and various customizations.


Firefox 4 New Menu Bar/Firefox Button

By default, Arch Linux shows the classic layout of the menu bar. To activate the new Firefox 4 layout with the "Firefox" button replacing the menu bar, uncheck View -> Toolbars -> Menubar.

In GNU/Linux, you will just get a plain grey button instead of the new orange one from Windows. However you can change this to either a Firefox icon or the icon followed by the "Firefox" text.

Adding the following to your ~/.mozilla/firefox/userprofile/chrome/userChrome.css file will place the icon before the text:

#appmenu-toolbar-button {
  list-style-image: url("chrome://branding/content/icon16.png");

Adding the following to the same file will remove the "Firefox" text:

#appmenu-toolbar-button > .toolbarbutton-text,
#appmenu-toolbar-button > .toolbarbutton-menu-dropmarker {
  display: none !important;
Note: You need to create both the chrome directory and userChrome.css, if they do not already exist.

Open containing folder problems (KDE)

If Firefox launches something other than your preferred file manager when using the "Open Containing Folder" option in the Downloads manager, make sure you select your file manager of choice (e.g. Dolphin) in KDE's System Settings:

System Settings -> Default Applications -> File Manager

If you have already selected your file manager of choice and Cervisia (or a file manager other than your favorite) is opening modify your user's ~/.local/share/applications/defaults.list to include these two lines:


Firefox keeps creating ~/Desktop even when this is not desired

Firefox uses ~/Desktop as the default place for download and upload files. To set it to another folder, create ~/.config/user-dirs.dirs and add:


Change <user> and <dir> to the actual directory.

How to prevent plugins from allowing popups?

Ever wondered why pop-ups appear even though you have blocked them? It seems that the Flash plugin can bypass default settings and annoy us with those pesky pop-ups. Fear not, for we can prevent it from doing that.

To get around it:

  1. Type about:config into the Firefox location bar.
  2. Right-click on the page and select New and then Integer.
  3. Name it privacy.popups.disable_from_plugins
  4. Set the value to 2.

The possible values are:

  • 0: Allow all popups from plugins.
  • 1: Allow popups, but limit them to dom.popup_maximum.
  • 2: Block popups from plugins.
  • 3: Block popups from plugins, even on whitelisted sites.

Middle-click errors

! The URL is not valid and cannot be loaded.

Another symptom is that middle-clicking results in unexpected behavior, like accessing a random web page.

The reason stems from the use of the middle mouse buttons in UNIX-like operating systems. The middle mouse button is used to paste whatever text has been highlighted/added to the clipboard. Then there is the possibly conflicting feature in Firefox, which defaults to loading the URL of the corresponding text when the button is depressed. This can be disabled like so:

Open the browser, and type the following into the address bar:


Search for middlemouse.contentLoadURL and set it to false.

Alternatively, having the traditional scroll cursor on middle-click (default behaviour on Windows browsers) can be achieved by searching for general.autoScroll and setting it to true.

Backspace does not work as the 'Back' button

As per this article, the feature has been removed in order to fix a bug. Follow the next steps to retain the original behaviour.

Open the browser and type the following address:


Search for browser.backspace_action and set it to 0 (zero).

Firefox does not remember login information

It may be due to a corrupted cookies.sqlite file in Firefox's profile folder. In order to fix this, just rename or remove the cookie.sqlite while Firefox is not running.

Open a terminal of choice and type the following:

$ cd ~/.mozilla/firefox/xxxxxxxx.default/
$ rm -f cookies.sqlite
Note: xxxxxxxx represents a random string of 8 characters.

Restart Firefox and see if it solved the problem.

Broken websites / input fields with dark Gtk Themes

When using a dark GTK theme, one might encounter Internet pages with unreadable input and text fields (p.e. Amazon - white text on white background). This can happen because the site only sets either background or text color, and Firefox takes the other one from the theme.

A work around is to explicitly setting standard colours for all web pages in ~/.mozilla/firefox/.../chrome/userContent.css.

The following sets input fields to standard black text / white background; both can be overridden by the displayed site, so that colors are seen as intended:

input {
    -moz-appearance: none !important;
    background-color: white;
    color: black;

textarea {
    -moz-appearance: none !important;
    background-color: white;
    color: black;

This will force the colours ("Allow pages to choose their own colors [..]" setting, in the Preferences > Content > Color dialog):

input {
    -moz-appearance: none !important;
    background-color: pink !important;
    color: green !important;

textarea {
    -moz-appearance: none !important;
    background-color: pink !important;
    color: green !important;

Change color values to suit, or use an add-on like Stylish.

File association problems

For non-GNOME users, Firefox may not associate file types (in the "Open With" part of the download dialog). Installing libgnome amends the problem:

pacman -S libgnome

If you are using KDE you can also do the following:

ln -s ~/.local/share/applications/mimeapps.list ~/.local/share/applications/mimeinfo.cache

From now on Firefox should use the applications which are explicitly set in KDE.

"I'm Feeling Lucky" Mode

Some search engines have a feeling lucky feature. For example Google has "I'm Feeling Lucky" and DuckDuckGo has "I'm Feeling Ducky".

To activate them:

  1. Type "about:config" in the address bar.
  2. Search for the string keyword.url
  3. Modify its value (if any) to the URL of the search engine.
For google, set it to:
For DuckDuckGo, set it to:

"Do you want Firefox to save your tabs for the next time it starts?" dialog does not appear

From the Mozilla Support site:

  1. Type "about:config" in the address bar.
  2. Set browser.warnOnQuit to true.
  3. Set browser.showQuitWarning to true.

Firefox has high CPU usage and feels slow on scrolling with nVidia GPUs

In some cases, forcing the proprietary nVidia driver to store pixmaps in video memory instead of system memory can yield massive improvements in the perceived performance of pixmap-intensive applications like Firefox. Run

$ nvidia-settings -a InitialPixmapPlacement=2

from the terminal; if desired results are achieved add this line to a script and use your desktop environment's autorun facilities to execute it on every startup. Alternatively, add the parameter to your ~/.nvidia-settings-rc and run

$ nvidia-settings --load-config-only

on startup. This setting is documented in nvidia-settings source code. Make sure you have added other perfomance-improving settings, see NVIDIA.

Firefox uses ugly fonts for its interface

If the fonts in the menu bar look ugly to you, chances are you're missing better looking fonts for Firefox to use. As a quick remedy, just install Type 1 fonts:

$ pacman -S xorg-fonts-type1

Firefox uses ugly fonts on certain webpages

When Firefox uses bitmap fonts, it can happen that on certain webpages the fonts are very ugly (compared to Google Chrome for example):

http://i.imgur.com/SMVdi.png vs http://i.imgur.com/jNmxU.png

To fix that, just disable bitmap fonts for X:

$ sudo ln -s /etc/fonts/conf.avail/70-no-bitmaps.conf /etc/fonts/conf.d/

The menu can't pop up after updating to Firefox 13

This problem may happen to some Chinese user who use fcitx as an input method. The problem may be caused by false environment variables of fcitx, please check it. Or you may solve it by installing fcitx-gtk2, fcitx-gtk3, and fcitx-qt.

See also

An account of the trademark issues from the Firefox package maintainer for Debian.
Official website for the GNU Mozilla forks.