Add-on (Mozilla)

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Add-on is the Mozilla term for software modules that can be added to the Firefox web browser and related applications. Mozilla hosts them on its official add-on website.[1]

Browser extensions are the primary type of add-on. In 2017, Mozilla enacted major changes to the application programming interface (API) for extensions in Firefox, replacing the long-standing XUL and XPCOM APIs with the WebExtensions API that is modeled after Google Chrome's API.[2][3][4] Thus add-ons that remain compatible with Firefox are now largely compatible with Chrome as well.[5] As of January, 2024, there are more than 36,000 add-ons and over 495,000 themes available for Firefox.[6][7]

  1. ^ "Official Add-on website". Mozilla. Retrieved 10 February 2019.
  2. ^ "The Future of Developing Firefox Add-ons". Mozilla Add-ons Blog. 21 August 2015. Retrieved 2018-12-15.
  3. ^ "Upcoming Changes in Compatibility Features". Mozilla Add-ons Blog. 10 August 2017. Retrieved 2018-12-15.
  4. ^ "How to enable legacy extensions in Firefox 57 - gHacks Tech News". www.ghacks.net. 12 August 2017. Retrieved 2018-12-14.
  5. ^ "Porting a Google Chrome extension". Mozilla. Retrieved 30 December 2018.
  6. ^ "Search results (Extensions) – Add-ons for Firefox (en-US)". addons.mozilla.org. Mozilla. Retrieved 28 January 2024.
  7. ^ "Search results (Themes) – Add-ons for Firefox (en-US)". addons.mozilla.org. Mozilla. Retrieved 28 January 2024.