Firefox for Mac/OS 10.11.6 (Mac/OS X El Capitan - Mozilla Support
For users running OS X 10.11.6 El Capitan, the most recent compatible version of Firefox is (Extended Support Release). Because modern versions of Firefox (v79 and later) require at least macOS 10.12, you must download this specific legacy version to maintain a functional and relatively secure browser on your older Mac. Which Version Do You Need? download firefox mac 10.11.6
Mozilla officially ended support for OS X 10.9, 10.10, and 10.11 in October 2021. The final build released for these systems was . While this version no longer receives security updates, it is the most stable and feature-complete option for El Capitan users. How to Download Firefox for Mac 10.11.6 Firefox for Mac/OS 10
To ensure you are downloading a safe and official file, use Mozilla’s archive servers rather than third-party sites. Mozilla officially ended support for OS X 10
