'Firefox 139' official release, full page translation possible within extension page
The official version of the web browser Firefox 139 has been released, bringing support for in-page full-page translation, support for transparent PNGs when copying and pasting, and improved HTTP/3 upload performance.
Firefox 139.0, See All New Features, Updates and Fixes
◆ Support for full page translation within the extension page
Previously, pressing the translation button on the extensions page would have no effect, but now a dialog box will appear.
It is now possible to translate the entire extension page starting with moz-extension://.
◆ Transparent PNG support when copying and pasting
Transparent PNG images now maintain their transparency when pasted.
◆ HTTP/3 upload performance improvements
HTTP/3 upload performance has been significantly improved, including improvements over QUIC 0-RTT resumption and high-bandwidth/high-latency connections.
◆Other changes
You can no longer import payment methods and passwords directly from Chrome on Windows
Changes for developers
Temporal API is now supported
- Workers timer throttling is now supported
- requestClose() is now supported for HTMLDialogElement
- The hidden =until-found attribute is now supported
Added support for WebAuthn largeBlob extension
Debugger routes are now scoped to the specific domains they are configured to
- Debugger Network panel Filter settings are now persisted between sessions
Debugger stopped line style now appears in high contrast mode
Improved cross-browser interoperability on some sites
- Service Workers now available in private browsing mode
Firefox 139 also includes several security bug fixes .
The next major version, Firefox 140, is scheduled to be released on Tuesday, June 24, 2025 local time.
Related Posts:
in Software, Posted by darkhorse_logmk