Use hardware acceleration. Hardware acceleration is when a browser uses a computer’s GPU to. Click Download Firefox. Note: If you want to have a choice of the language for your Firefox installation, click the Download options and other languages link instead. Once the download has completed, the file (Firefox.dmg) may open by itself and pop open a Finder window containing the Firefox application.
![Mac Mac](/uploads/1/3/4/1/134123570/894381024.png)
Starting with Firefox version 49, Firefox requires Mac OS X 10.9 (Mavericks) or higher. Visit this Apple Support page to find your Mac OS version.
![Quantum Quantum](/uploads/1/3/4/1/134123570/204281393.png)
If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version that Apple supports. Visit this Apple Support page to learn more about upgrading your Mac.
Note: If you have Mac OS X 10.7 (Lion) or 10.6 (Snow Leopard), you will need to download OS X El Capitan before you can upgrade to the latest Mac OS.
Firefox Quan
While insecure versions of Firefox will continue to work on OS X 10.8 and earlier, using an up-to-date version of Firefox on a supported version of Mac OS will provide you with the best and safest user experience.