🦊 Firefox 144 – Key Updates (October 2025)
🔐 Security & Account Management
- Password Manager encryption upgraded:
- From
3DES-CBC→AES-256-CBCfor local logins. - Firefox Sync continues using
AES-256-GCM.
- From
- Toolbar update: “Sign In” label added next to the Firefox Account icon.
🖼️ User Interface & Features
- Picture-in-Picture (PiP):
- Close PiP without pausing video via Shift + Click or Shift + Esc.
- Tab grouping:
- Drag tabs into collapsed groups without auto-expansion.
- Profile management:
- Rolled out globally to all users.
- New AI integration – Perplexity:
- AI-powered answer engine offering direct, conversational results via the address bar unified search button.
📱 Platform-Specific Changes
- Android:
- New translations banner for translation status.
- Removed “Allow screenshots in private browsing.”
- Windows:
- Links from other apps open in current or new virtual desktop window only.
💻 Developer Enhancements
- New APIs & features:
Element.moveBefore,PerformanceEventTiming.interactionId,command/commandforattributes.- View Transition API Level 1, math-shift compact, resizeMode (getUserMedia), RTCDataChannel worker transfer, and upsert proposal (
getOrInsert,getOrInsertComputed). - WebGPU GPUDevice.importExternalTexture on Windows.
- ScreenOrientation API:
- Adds
lock()andunlock()on Windows tablets and Android.
- Adds
- WebRender:
- Dithering for
linear-,conic-, andradial-gradientrendering.
- Dithering for
- WebCodecs:
- Batch-encoding path for VideoEncoder boosts throughput and lowers latency.
- Inspector Tool:
- Event tooltips now show badges for custom events.
🎨 Web Standards & CSS
- Renamed:
CSS2Properties→CSSStyleProperties(better cross-browser alignment). - Editor improvement: Jump directly to CSS custom property definitions in
var()functions.
📦 Release Details
- Official release: October 14, 2025.
- Includes updates to Firefox 140.4 and Firefox 115.29.0 ESR.
- Downloads available: Source and binaries for 64-bit, 32-bit, and ARM64 systems.
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