Release build - 1.14.1b (2025-07-01)

Zen Stable Release

Fixes

• Fixed a crash with third party tools

Release build - 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 - 1.13.2b (2025-06-16)

Zen Stable Release

New Features

• Show spaces when right clicking on the workspace indicator

Release build - 1.13.1b (2025-06-15)

Zen Stable Release

Fixes

• Small fixes from the previous release.

Release build - 1.13b (2025-06-13)

Zen Stable Release

This update includes overall fixes, stability and a new way to manage spaces

Security

Various security fixes

New Features

• There's a new way to manage spaces, which brings a more intuitive and user-friendly experience
• Updated to firefox 139.0.4
• Added support for google safebrowsing for better security
• Collapsed toolbarr gets a slight UI redesign

Fixes

• Fixed issues related to glance and split view
• Fixed performance issues and high GPU usage for some users
• Other small fixes and improvements

Breaking Changes

• Customizable UI buttons at the bottom has been reset to a new default state

Release build - 1.12.10b (2025-06-01)

Zen Stable Release

Fixes

• An issue with migration that leaded to unexpected behavior when starting up zen, leading to some services being unavailable.
• Unloading pinned tabs using the wrong favicon instead of the cached one.
• Gradients not showing when restoring multiple windows at once
• Restoring previously closed pinned tabs being on the wrong container.

Release build - 1.12.9b (2025-05-30)

Zen Stable Release

This update includes several fixes, security updates, and a few changes! We've bundled the updates for Firefox 139.0 and 139.0.1 into the same release. Since Firefox 139.0 had some rendering issues on Windows for NVIDIA users, we waited an extra day to release this update to ensure the issues were resolved.

New Features

• Updated to Firefox 139.0 and 139.0.1
• Added automatic updates for mods
• Auto tab unloader now uses Firefox's default tab discarding feature, which is based on time and memory usage, instead of the previous time-only method
• Improved performance for rendering rounded corners in the webview
• Enabled the browser to prioritize more important processes when Zen is under memory pressure on macOS
• The context menu item 'Search text on search engine' now opens Glance instead of a new tab

Fixes

• Pinned and essential tabs not restoring their icons correctly
• Other issues with split views and Glance
• Compact mode should now work correctly after closing the window — please let us know if you still experience issues

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Release build - 1.12.8b (2025-05-22)

Zen Stable Release

New Features

• Private windows will now have 'private spaces'

Fixes

• Issues with custom colors on the gradient generator.
• Site notifications not appearing unless hovering on the top part of the screen.
• Some issues with glance + split view

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Release build - 1.12.7b (2025-05-21)

Zen Stable Release

New Features

• A much better transition between workspaces gradients

Fixes

• Fixed window control buttons not appearing on hover
• Fixed double click on the tab strip not opening a new tab
• Fixed dragging tabs with glance open acting weird

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Release build - 1.12.6b (2025-05-20)

Zen Stable Release

This new release updates Firefox to the latest version which fixes various security issues.

New Features

• Updated to Firefox 138.0.4
• Better compact mode support for multiple toolbars.

Fixes

• Compact mode showing 'tab opened in the background' when having multiple toolbars.
• An issue with GTK popups having low contrast.
• Tabs not being able to unload after closing Glance.
• An issue with updating invalid mods clearing the mod list.
• An accessibility issue with the scrollbar on the sidebar.
• Opening a new link in split view while having Glance open.
• 'All tabs' menu not showing any text when collapsed toolbar is enabled.

Breaking Changes

• The customizable UI on the tab strip (located between the top and bottom icons) has been discontinued due to the way the internal layout functions—buttons placed in that area are automatically removed. While it’s possible to re-enable this feature by doing some hacky CSS, doing so may lead to instability or breakage, and is not officially supported.

Theme Changes

• Changed the layout of workspaces and their icons internally to provide a more stable layout that doesn't require floating elements. We finally managed to get it to how we wanted it to be, so it will change less in the future.

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