الجديد في النسخة (شقاع) اااا
New:
- Built-in PDF viewer

Changed:
- Canvas elements can export their content as an image blob using canvas.toBlob()
- Startup performance improvements (bugs 715402 and 756313)

Developer:
- Debugger now supports pausing on exceptions and hiding non-enumerable properties
-  Remote Web Console is available for connecting to Firefox on Android or  Firefox OS (experimental, set devtools.debugger.remote-enabled to true)
-  There is now a Browser Debugger available for add-on and browser  developers (experimental, set devtools.chrome.enabled to true)
- Web Console CSS links now open in the Style Editor

HTML5:
- CSS @page is now supported
- CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
- CSS text-transform now supports full-width

Fixed:
- Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode (802274)