This is an older version. The current version is 151.0. Firefox Developer Edition (eo) 151.0 · Released:
Installer files 144.0
| Architecture | Type | Scope | File size | Download | SHA256 |
|---|---|---|---|---|---|
| 64-bit | EXE (NSIS) | All users | — | download-installer.cdn.mozilla.net | VirusTotal |
| ARM64 | EXE (NSIS) | All users | — | download-installer.cdn.mozilla.net | VirusTotal |
| 32-bit | EXE (NSIS) | All users | — | download-installer.cdn.mozilla.net | VirusTotal |
Link and SHA256 come from the Windows Package Manager community manifest. Compare the hash of the downloaded file before running it.
Release notes
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
- 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 now supports the upsert proposal. This adds getOrInsert and getOrInsertComputed methods to Map and WeakMap. These methods either return the value associated with a key, or insert a default value, and then return that value, simplifying handling of cases where it's not known if a key is already present in the Map or WeakMap.
- Firefox now supports the lock() and unlock() methods of ScreenOrientation interface on Windows tablets and Android devices.
- Implemented worker transfer for RTCDataChannel.
- WebCodecs on Windows now has a batch-encoding path for VideoEncoder, improving performance with higher throughput and lower submission latency due to a larger default batch size.
