Download Mozilla Firefox 12.0 Beta 1

As we are used to from Mozilla, the first beta release of the next version appeared shortly after the release of the final of the Firefox web browser. New in version 12 is, among other things, that updating to a newer version has been made easier, the page where the source code can be viewed now has line numbers and the search within a page has been improved. Below you will find the complete overview of the improvements that we can expect in version 12.0.

New:

• Windows: Firefox is now easier to update with one less prompt (User Account Control)
• Page Source now has line numbers

Changed:

• Line breaks are now supported in the title attribute
• Improvements to “Find in Page” to center search result
• URLs pasted into the download manager window are now automatically downloaded

Developer

• the column fill CSS property has been implemented
• Support for the text-align-last CSS property has been added
• Experimental support for ECMAScript 6 folder and set objects has been implemented

Fixed

• OS X: WebGL performance may be degraded on some hardware (713305)

Known Issues

• If you try to start Firefox using a locked profile, it will crash (see 573369)
• For some users, scrolling in the main GMail window will be slower than usual (see 579260)
• Some synaptic touch pads are unable to vertical scroll (see 622410)
• Windows: The use of Microsoft’s System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)

The following downloads are available:
Mozilla Firefox 12.0 beta 1 for Windows (English)
Mozilla Firefox 12.0 beta 1 for Linux (English)
Mozilla Firefox 12.0 Beta 1 for Mac OS X (English)
Mozilla Firefox 12.0 Beta 1 for Windows (English)
Mozilla Firefox 12.0 Beta 1 for Linux (English)
Mozilla Firefox 12.0 Beta 1 for Mac OS X (English)
Mozilla Firefox 12.0 beta 1 for Windows (Frisian)
Mozilla Firefox 12.0 beta 1 for Linux (Frisian)
Mozilla Firefox 12.0 beta 1 for Mac OS X (Frisian)