Firefox 78 For Mac El Capitan Download New! May 2026

Open your Applications folder and double-click Firefox. You may need to click "Open" on a security prompt. Why Version 78?

Click the link above to download the Firefox 78.15.0esr.dmg file. firefox 78 for mac el capitan download

For other regions, browse the full locale directory. Installation Guide for El Capitan Open your Applications folder and double-click Firefox

Double-click the downloaded file in your Downloads folder to mount the disk image. Click the link above to download the Firefox 78

The safest way to acquire this software is through official Mozilla Support channels or their public archive:

For users of older Apple hardware, is the final version compatible with OS X 10.11 El Capitan. While newer versions of Firefox require macOS 10.12 or later, this specific release remains the most stable and functional option for legacy systems. Direct Download Links

A window will appear with the Firefox icon. Drag this icon into your Applications folder.

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