-
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
-
NEW
Built-in PDF viewer
-
CHANGED
Canvas elements can export their content as an image blob using canvas.toBlob()
-
CHANGED
Startup performance improvements (bugs 715402 and 756313)
-
CHANGED
Experience better image quality with our new HTML scaling algorithm
-
DEVELOPER
Debugger now supports pausing on exceptions and hiding non-enumerable properties
-
DEVELOPER
Remote Web Console is available for connecting to Firefox on Android or Firefox OS (experimental, set devtools.debugger.remote-enabled to true)
-
DEVELOPER
There is now a Browser Debugger available for add-on and browser developers (experimental, set devtools.chrome.enabled to true)
-
DEVELOPER
Web Console CSS links now open in the Style Editor
-
HTML5
CSS @page is now supported
-
HTML5
CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
-
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)
CARVIEW |
Select Language
HTTP/2 301
via: 1.1 google, 1.1 varnish, 1.1 varnish
cache-control: max-age=43200
referrer-policy: strict-origin-when-cross-origin
cross-origin-opener-policy: same-origin
x-backend-server: bedrock-5bfdbb6f5f-chvqp.gcp-us-west1
expires: Wed, 08 Oct 2025 06:14:29 GMT
server: granian
x-content-type-options: nosniff
content-type: text/html; charset=utf-8
location: https://www.firefox.com/firefox/19.0.2/releasenotes/?redirect_source=mozilla-org
strict-transport-security: max-age=31536000
accept-ranges: bytes
age: 0
date: Tue, 07 Oct 2025 18:14:29 GMT
x-served-by: cache-bom-vanm7210034-BOM, cache-bom-vanm7210081-BOM
x-cache: MISS, MISS
x-cache-hits: 0, 0
x-timer: S1759860870.539067,VS0,VE284
content-length: 0
HTTP/2 301
content-type: text/html; charset=utf-8
x-content-type-options: nosniff
cache-control: max-age=43200
via: 1.1 google, 1.1 varnish, 1.1 varnish
server: granian
cross-origin-opener-policy: same-origin
expires: Wed, 08 Oct 2025 06:14:30 GMT
strict-transport-security: max-age=31536000
x-backend-server: springfield-cf86878db-vp2wk.gcp-us-west1
location: https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0.2/releasenotes/?redirect_source=mozilla-org
referrer-policy: strict-origin-when-cross-origin
accept-ranges: bytes
age: 0
date: Tue, 07 Oct 2025 18:14:30 GMT
x-served-by: cache-bom-vanm7210051-BOM, cache-bom-vanm7210089-BOM
x-cache: MISS, MISS
x-cache-hits: 0, 0
x-timer: S1759860870.878614,VS0,VE286
vary: origin
content-length: 0
HTTP/1.1 301 Moved Permanently
Content-Type: text/plain; charset=utf-8
Date: Tue, 07 Oct 2025 18:14:30 GMT
Location: https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-US/firefox/19.0.2/releasenotes/?redirect_source=mozilla-org
Server: Netlify
X-Nf-Request-Id: 01K6ZY3K20Z65RZBCQW4SFXJR5
Content-Length: 150
HTTP/2 301
cache-status: "Netlify Edge"; fwd=miss
content-type: text/html
date: Tue, 07 Oct 2025 18:14:30 GMT
location: /www.mozilla.org/firefox_releasenotes/en-us/firefox/19.0.2/releasenotes/?redirect_source=mozilla-org
server: Netlify
strict-transport-security: max-age=31536000
x-nf-request-id: 01K6ZY3K40H6VJDJTN77DQ83KE
content-length: 98
HTTP/2 200
accept-ranges: bytes
age: 0
cache-control: public,max-age=0,must-revalidate
cache-status: "Netlify Edge"; fwd=miss
content-encoding: gzip
content-type: text/html; charset=UTF-8
date: Tue, 07 Oct 2025 18:14:30 GMT
etag: "9201dcc6dc632a889d396c6e782f8176-ssl-df"
server: Netlify
strict-transport-security: max-age=31536000
vary: Accept-Encoding
x-nf-request-id: 01K6ZY3KETDKCF6VV25DTT14C0
Firefox Notes - Desktop
You are viewing information archived from Mozilla.org on 2014-08-13.
View notes for:
- Desktop
- Mobile
Notes (First offered to release channel users on March 7, 2013)
Check out "Whats New" and "Known Issues" for this version of Firefox below. As always, youre encouraged to tell us what you think, or file a bug in Bugzilla. We'd also like extend a special thank you to all of the new Mozillians who contributed to Firefox 19!
If interested, please see the complete list of changes in this release.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
Try Firefox
Want to get involved?
Did you know that most of the content in Firefox Support was written by volunteers?
Find out more »Having Problems?
Other Resources
Firefox
Privacy Policy | Legal Notices | Report Trademark Abuse
Except where otherwise noted, content on this site is licensed under the
Creative Commons Attribution Share-Alike License v3.0 or any later version.