List of Firefox extensions

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This is a list of notable Firefox extensions, or software add-ons designed for Mozilla Firefox-based web browsers. Many Firefox extensions work in the SeaMonkey web browser as well as the Pale Moon web browser and the Thunderbird e-mail client.



Website integration[edit]

  • Forecastfox Weather – displays a summary of weather forecast from AccuWeather.
  • LibX – library catalogues.
  • StumbleUpon – allows users to encounter random sites based upon the rating given by stumblers and their interests.

Social addons[edit]

  • WiseStamp – social profiles and apps for emails

Google integration[edit]

  • Google Earth – provides full integration of Google Earth into the browser.
  • Google Toolbar – provides features related to Google Search as a toolbar.

Wikipedia integration[edit]

Application integration[edit]

Browser features[edit]

Browser behavior and navigation[edit]

  • Automatik Text Reader – a multi-language text-to-speech extension.
  • Cooliris – a tool for browsing photos and videos from the web or a desktop.
  • Flashblock – until 2013, the tool used to prevent downloaded Flash content from displaying unless explicitly started (clicked) or whitelisted.
  • Hyperwords – allows users to select text and perform rich commands, such as instant Wikipedia look-ups, in-page translations, conversions, etc.
  • Lightbeam – displays third party tracking cookies placed on the user's computer while visiting various websites with graph.
  • Pentadactyl and Vimperator – make Firefox feel and behave like the Vim text editor.
  • Turn Off the Lights – is used to obscure or mask content other than a running video.
  • Zotero – enables users to collect, manage, and cite research from all types of sources from the browser.



  • Greasemonkey – allows users to install user scripts that modify specific web pages
  • iMacros – a macro recorder for the Firefox web browser.
  • Stylish – allows the user to install custom CSS that can modify specific web pages and XUL application interfaces.

Download management[edit]


Language tools[edit]

Privacy and security[edit]

Some extensions mentioned in other categories at this page (such as AdBlock/AdBlock Plus) will also increase security.[2] Also, Tor, Torbutton, and Torlauncher aren't mentioned as they are not simply extensions for Firefox but instead only work on modified Firefox versions[3] Besides these add-ons, changing settings in Firefox Preferences and in about:config also will help with privacy and security.


  • Showcase – shows tabs as thumbnails, to preview, manage and search across them.
  • Tab Mix Plus – provides tabbed browsing enhancements.

Website development tools[edit]

  • Alexa Toolbar – provides access to SEO data.
  • ColorZilla – adds an eye dropper (color reader), color palettes, page zooming, and displays element information.
  • Firebug – allows the debugging, editing, and modifying of any website's CSS, HTML, DOM, and JavaScript, and provides other web development tools.
  • FireFTP – is a cross-platform FTP client which provides access to FTP servers.
  • Web Developer – adds a menu and a toolbar to the browser with various web developer tools.


  • FireTune – introduced in 2005 which aimed at optimizing the speed of the browser.
  • SurfSafe – detects false or misleadingly used images.


  1. ^ "Disconnect – Add-ons for Firefox". Retrieved 2018-06-08.
  2. ^ "Best Privacy Brower?". Wilders Security Forums. Retrieved 2018-06-08.
  3. ^ Inc., The Tor Project. "Tor Browser". Retrieved 2018-06-08.

External links[edit]