Do not run Firefox directly from the Firefox.dmg file or drag the icon directly to your desktop to install, as this can result in issues such as lost data and settings. Drag the Firefox icon on top of the Applications folder in order to copy it there.Ĭomplete the steps above before running Firefox.
It will automatically detect the platform and language on your computer and recommend the best version of Firefox for you. If you use an old version of OS X, see this article for more information: Note that Firefox can be installed on both Intel-based Macs (x86 architecture) and Apple devices with the new ARM-based CPU ( Apple Silicon). Make sure your Mac meets the Firefox System Requirements.