Because you download Firefox from the official site, click Open. When you first start up Firefox, you will be warned that you downloaded Firefox from the Internet. Just click on its icon in the dock or Applications folder to start it. Just open your Applications folder and drag Firefox to the dock.įirefox is now ready for use. Tip: You can add Firefox to your dock for easy access. 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. After completing the download, the file (Firefox.dmg) may open by itself and pop open a Finder window containing the Firefox application.Note: If you want to have a choice of the language for your Firefox installation, click the Download options and other languages link instead.It will automatically detect the platform and language on your computer and recommend the best version of Firefox for you. Visit the Firefox download page in any browser (for example, Safari).

Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release.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.

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