Download Mozilla Firefox 33.1 Final

Version 33.1, first offered to Release channel users on November 10, 2014.

Check out "What’s New" and "Known Issues" for this version of Firefox below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release.

We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!

What’s New

• Forget Button added
• Enhanced Tiles
• Privacy tour introduced
• Adding DuckDuckGo as a search option

Known Issues

• PDF.js: With some images, wrong colors could show up. Affects a very small number of PDF
• Windows: Interface may be slow when typing or selecting text (1089183)
• Windows: On some combination of hardware and drivers, some flickering can happen

System Requirements

Windows Operating Systems

• Windows XP SP2
• Windows Server 2003 SP1
• Windows Vista
• Windows 7
• Windows 8

Please note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 33, only 32-bit builds of Firefox 33 are supported at this time.
Recommended Hardware

• Pentium 4 or newer processor that supports SSE2
• 512MB of RAM
• 200MB of hard drive space

Mac Operating Systems

• Mac OS X 10.6
• Mac OS X 10.7
• Mac OS X 10.8
• Mac OS X 10.9

Recommended Hardware

• Macintosh computer with an Intel x86 processor
• 512 MB of RAM
• 200 MB hard drive space

GNU/Linux Software Requirements
Please note that GNU/Linux distributors may provide packages for your distribution which have different requirements.Firefox will not run at all without the following libraries or packages:

• GTK+ 2.18 or higher
• GLib 2.22 or higher
• Pango 1.14 or higher
• X.Org 1.0 or higher (1.7 or higher is recommended)
• libstdc++ 4.3 or higher

For optimal functionality, we recommend the following libraries or packages:

• NetworkManager 0.7 or higher
• DBus 1.0 or higher
• HAL 0.5.8 or higher
• GNOME 2.16 or higher