Zen Browser 1.14b is a stable release that includes several security enhancements and new functionalities. The upgrade to Firefox 140.0.2 includes enhancements such as an improved color picker, automatic detection of dark/light mode, and refined gradient rendering. The modifications have been transitioned to a C++ backend to improve performance and stability. Furthermore, legacy customization styles are not enabled by default for new users.

Zen Browser 1.14b (2025-06-29)

Zen Stable Release

Security

Various security fixes

New Features

• Upgraded to Firefox 140.0.2.
• Introduced a refreshed look and feel for the color picker.
• Added automatic dark/light mode detection based on the browser's background.
• Improved gradient rendering to reduce dithering artifacts.
• Moved mods to a C++ backend for enhanced performance, stability, and caching.
• Made workspace swiping smoother with animated background transitions and improved responsiveness.
• Simplified the compact mode toggle: now a single button replaces the previous submenu in single-toolbar setups.
• The Add-ons button can now be removed from the toolbar.

Fixes

• Fixed visual twitching when cancelling a drag-to-split operation.
• Resolved an issue with tab switching when tabs overflow the toolbar.

Changes

• Legacy customization styles are now disabled by default for new users unless a userChrome.css file is present.
• New user profiles now have container-specific essentials enabled by default.

Release build - 1.14b (2025-06-29)