-
FIXED
19.0.2: Security-driven release, see details in the associated security advisory
-
FIXED
19.0.1 (Windows 8 only): Fixed stability issue for some AMD Radeon HD graphics cards
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NEW
Built-in PDF viewer
-
CHANGED
Canvas elements can export their content as an image blob using canvas.toBlob()
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CHANGED
Startup performance improvements (bugs 715402 and 756313)
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CHANGED
Experience better image quality with our new HTML scaling algorithm
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DEVELOPER
Debugger now supports pausing on exceptions and hiding non-enumerable properties
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DEVELOPER
Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)
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DEVELOPER
There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)
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DEVELOPER
Web Console CSS links now open in the Style Editor
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HTML5
CSS @page is now supported
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HTML5
CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
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HTML5
CSS text-transform now supports full-width
-
FIXED
Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages (825205)
-
FIXED
Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode (802274)
-
FIXED
Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode (825734)
What’s New
Known Issues
-
Unresolved
If you try to start Firefox using a locked profile, it will crash (see 573369)
-
Unresolved
For some users, scrolling in the main GMail window will be slower than usual (see 579260)
-
Unresolved
Mootools 1.2.x incompatible with Firefox 18 and newer.Fixed in Mootools 1.3 and newer (see 789036)
-
Unresolved
Some function keys may not work when pressed (see 833719)
Unresolved on v19 Resolved in v21