Legacy components (like Flash or Java) that once enabled external content, though these have largely been phased out in favor of native web standards. Essential Add-ons for 2026
Add-ons are the building blocks of a personalized web browser. Built using standard web technologies like , they interact with the WebExtensions API —a cross-browser standard that makes Firefox extensions largely compatible with those on Chrome, Edge, and Safari. Core Categories of Add-ons:
Change the visual appearance of the browser, including colors and background images.
(officially called Firefox Extensions ) are small software components that allow users to customize their browsing experience by adding new features or modifying existing website behavior. As of early 2026, the official Mozilla Add-ons (AMO) repository hosts over 74,000 extensions and 511,000 themes , offering tools for everything from advanced privacy to productivity. The Role of Mozilla Add-ons Today
Selecting the right add-ons can significantly boost both security and efficiency. Based on recent usage trends, these are the top recommendations: Firefox add-ons and browser extensions