| Version | Change log |
| Utilu Mozilla Firefox Collection 143.0.4 Oct 3, 2025 |
New: You can now close a Picture-in-Picture window without pausing the video. Press Shift + Click on the close button or use Shift + Esc to exit while keeping playback uninterrupted. Logins in the Firefox Password Manager are now encrypted using a more modern encryption scheme, switching from 3DES-CBC to AES-256-CBC. This change only affects the local encryption of logins on the disk; logins synced through Firefox Sync are end-to-end encrypted independently and have already been using a strong encryption scheme (AES-256-GCM) previously. On Firefox for Android, a new translations banner now informs you of the translation status of the current webpage. Changed: On Windows, when opening a link from another application, Firefox will only use a window on the current virtual desktop or open a new window if needed. On Firefox for Android, the "Allow screenshots in private browsing" setting has been removed. Developer: Developer Information: The events tooltip in the Inspector now shows a badge besides custom events, making it easier to differentiate them from built-in events. Web Platform: Firefox now supports the Element.moveBefore API. Firefox now supports math-shift compact. Firefox now supports the WebGPU GPUDevice.importExternalTexture API on Windows. Firefox now supports PerformanceEventTiming.interactionId, allowing developers to group related input events. This enables support for the Interaction to Next Paint (INP) responsiveness metric. Firefox now supports the command and commandfor attributes. Firefox now supports the View Transitions API Level 1. The View Transitions API provides a mechanism for easily creating animated transitions between different website views. The resizeMode getUserMedia constraint is now available, allowing developers to crop and downscale video captured from a camera to any resolution they choose. Dithering is now applied when linear-gradient, conic-gradient, and radial-gradient are rendered using hardware WebRender. Firefox no |
| Utilu Mozilla Firefox Collection 141.0 Jul 21, 2025 |
New: On Linux Firefox uses less memory and no longer requires a forced restart after an update has been applied by a package manager. Developer: Firefox will now also clear the back-forward-cache when receiving the Clear-Site-Data: "cache" response header. Web Platform: Implemented the closedby attribute and it's related closedBy property on dialogs indicating the types of user actions that can be used to close the associated <dialog> element. Support for Cookies Having Independent Partitioned State (CHIPS) is now re-enabled, allowing developers to opt a cookie into storage partitioning per top-level site. |
| Utilu Mozilla Firefox Collection 140.0.4 Jul 8, 2025 |
New: On Linux Firefox uses less memory and no longer requires a forced restart after an update has been applied by a package manager. Developer: Firefox will now also clear the back-forward-cache when receiving the Clear-Site-Data: "cache" response header. Web Platform: Implemented the closedby attribute and it's related closedBy property on dialogs indicating the types of user actions that can be used to close the associated <dialog> element. Support for Cookies Having Independent Partitioned State (CHIPS) is now re-enabled, allowing developers to opt a cookie into storage partitioning per top-level site. |
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