Mar 05, 2025 16:10:00

'Firefox 136' official release, vertical tabs now available

The official version of the web browser ' Firefox 136 ' has been released. The 'vertical tab layout' that arranges tabs in a sidebar is now available, making it easier to organize when you have many tabs open.

Firefox 136.0, See All New Features, Updates and Fixes

https://www.mozilla.org/en-US/firefox/136.0/releasenotes/

◆ Vertical tab layout released
Until now, it was possible to display a sidebar that displayed the AI chatbot, tabs for other devices, history, etc. by clicking and checking 'Show Sidebar' in the 'General' tab of settings.

In Firefox 136, you can now use the 'Vertical Tabs Layout' which arranges open tabs vertically by enabling 'Vertical Tabs' from the 'Customize Sidebar' menu.

It is said to be easier to organize tabs because it can display more tabs simultaneously than the conventional layout that arranges tabs horizontally.

◆ Update of 'Clear browsing data and cookies'
The 'Saved form entry history,' which was previously included in the 'Browsed pages and downloads history,' has now been separated into a separate category, and you can choose whether or not to clear it individually.

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SmartBlock Update
SmartBlock, which blocks tracking scripts when Enhanced Tracking Protection is set to 'Strict' and when in private browsing mode, has been updated to allow selective unblocking of some SNS embeds. Firefox 136 only allows unblocking of some embed types, but plans to support various types of embeds in the future.

◆ HTTPS first mode is enabled
HTTPS first mode has been enabled, which updates page loads to HTTPS by default. Fallback to HTTP communication will occur only if HTTPS connection fails.

Changes for developers
- Support for Intl.DurationFormat allows you to format durations by language.
- Support for CSS pseudo-classes ' :open ' and ' :has-slotted '
・Support for asynchronous cookie API ' Cookie Store API '
- Support for reflecting ARIA elements
-Referrer is now sent when using a refresh redirect using the meta element
- Support for sending and receiving AV1 video codec via WebRTC
- Support for simulcasting, encoding and sending/receiving multiple qualities for the H264 video codec via WebRTC
- 'plaintext-only' has been added to the contenteditable attribute

◆Other changes
- Firefox for macOS now consumes less power
-Hardware acceleration is now enabled in Firefox for macOS when playing HEVC format movies.
-Hardware video decoding is now enabled on Linux with AMD GPUs
Firefox is now available for Linux on ARM64 architecture
-Text replacement feature is now supported on Firefox for macOS

Firefox 136 also includes several security bug fixes .

The next major version, Firefox 137, is scheduled to be released on Tuesday, April 1, 2025 local time.