Firefox

Install Firefox

With Chocolatey

Firefox can be installed with Chocolatey.

choco install firefox /l:en-US /NoDesktopShortcut /RemoveDistributionDir

All parameters (/p:xx…) are optional

`/l:xx`	specifies the locale, a list of possible locales can be found in the relase notes of FireFox.
`/InstallDir:"p:\ath\to\directory"`
`/NoTaskbarShortcut`	Don't create a shortcut on the Taskbar
`/NoDesktopShortcut`	Don't create a shortcut on the Desktop
`/NoStartMenuShortcut`	Don't create a shortcut in the Start menu
`/NoMaintenanceService`	Don't install Maintenance Service
`/RemoveDistributionDir`	Remove distribution directory on installation/update. (This is the default behavior of the Firefox Installer, but not for this Chocolatey Package)
`/NoAutoUpdate`	Sets a `policies.json` file to not update Firefox and does not install the Maintenance Service

Choose where to safe files

Don't always safe files to ~/Downloads, let me choose the destination directory.

Edit -> Preferences -> General -> Always ask me where to save files.

Profiles

A profile stores

a history
bookmarks
settings
add ons

In Windows, the default location for profiles is %APPDATA%\Mozilla\Firefox\Profiles.

A profile is stored in a sub directory under that directory.

The profiles are also found in the profile.ini file.

Information about profiles is shown with about:profiles.

Version

The currently installed version of Firefox seems to be stored in the registry under the default value of the HKEY_CURRENT_USER\Software\Mozilla\Mozilla Firefox key.

See also the CurrentVersion value under this key.

The version is also shown in the about:support page.

The version is also shown in Menu -> Help -> About Firefox

HTTP header

The HTTP (reaquest) header Accept-Language can be changed in about:config -> intl.accept_languages.

Add ons

Types of add ons:

Extensions
Themes
Plugins (such as Adobe-Flash or OpenH264 (decoding of videostreams)). Apparently, they're being phased out.
Dictionaries (language packs?)
Search Engines

about:* pages

about:config, about:profiles, about:support, about:plugins, about:buildconfig, about:memory, about:performance, about:serviceworkers

about:config

Turn off the annoying beep when using ctrl-f to search for an inexisting word on a page: about:config -> then set accessibility.typeaheadfind.enablesound to false.

Web Console / Browser Console

Firefox has a Web Console and a Browser Console: the Web Console logs information of a single web page while the Browser Console logs the information of a running Firefox instance.

Opening the Web Console

The Web Console can be opened with either

Menu: Web Developer -> Web Console
ctrl+shift+K (OS X: command-option K).

A multi-line editor-mode can be opened with ctrl+B.

Writing into the Web Console with JavaScript

With JavaScript, it is possible to write information into the Web Console with the console.log() API.