New

• Focus on just one tab in a group without the clutter. Your active tab now stays in view, keeping things tidy even with the group collapsed.

  

• We’re excited to share another tab groups update that addresses a top request from our community! You can now drag a tab into a collapsed group without automatically expanding it. It’s a quick way to stay organized while minimizing visual distractions.

• Profile management, now rolling out gradually to users globally over the next few weeks, helps you protect your privacy and stay focused by separating your online life into distinct profiles for work, school, vacation planning, or whatever you choose. You can name your profiles and customize them with avatars and color themes for easy recognition, then quickly switch between them while keeping bookmarks, tabs, and browsing history completely separate. The new Profiles feature is available for Windows 11, Mac, and Linux users, with Windows 10 support coming soon.

  

  

  This feature is part of a progressive roll out.

  What is a progressive roll out?

  Certain new Firefox features are released gradually. This means some users will see the feature before everyone does. This approach helps to get early feedback to catch bugs and improve behavior quickly, meaning more Firefox users overall have a better experience.

• 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 stored in the Firefox Password Manager are now encrypted on disk using a modern encryption scheme (AES-256-CBC), replacing the older 3DES-CBC. This change improves local data protection. Logins synced through Firefox Sync remain end-to-end encrypted and already use AES-256-GCM.

• Visual search powered by Google Lens

  With just a right-click on any image, you can now:
  ✨ Find similar products, places, or objects
  ✨ Copy, translate, or search text from images
  ✨ Get inspiration for learning, travel, or shopping

  Look for the new “Search Image with Google Lens” option in your right-click menu (highlighted with a NEW badge at first).
  This is a desktop-only feature, rolling out worldwide. Your default search engine must be set to Google in order to use it.

  

  

  This feature is part of a progressive roll out.

  What is a progressive roll out?

  Certain new Firefox features are released gradually. This means some users will see the feature before everyone does. This approach helps to get early feedback to catch bugs and improve behavior quickly, meaning more Firefox users overall have a better experience.

• Perplexity AI Search in Firefox

  On desktop, Firefox now includes Perplexity, an AI-powered answer engine built into the browser. Perplexity delivers direct, conversational answers to complex questions, helping you get quick summaries, accurate references, or creative inspiration without digging through multiple sources. It’s rolling out worldwide from the address bar via the unified search button.

  

  This feature is part of a progressive roll out.

  What is a progressive roll out?

  Certain new Firefox features are released gradually. This means some users will see the feature before everyone does. This approach helps to get early feedback to catch bugs and improve behavior quickly, meaning more Firefox users overall have a better experience.

• The following languages are now available for translation:

  • Azerbaijani
  • Bangla
  • Icelandic

Fixed

• Various security fixes.

• The following languages have improved translation quality:

  • Arabic
  • Bulgarian
  • Catalan
  • Chinese (Simplified)
  • Czech
  • Dutch
  • Estonian
  • Finnish
  • French
  • German
  • Hungarian
  • Italian
  • Japanese
  • Portuguese
  • Persian
  • Spanish
  • Ukrainian

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.

Enterprise

• You can find information about policy updates and enterprise specific bug fixes in the Firefox for Enterprise 144 Release Notes.

Developer

• Developer Information

• You can now jump to a CSS custom property's definition from within the var() function in style rules.

• 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 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.

• 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.

• Firefox now supports worker transfer for RTCDataChannel.

• Firefox now supports the resizeMode getUserMedia constraint, allowing developers to crop and downscale video captured from a camera to any resolution they choose.

• Firefox now supports the WebGPU GPUDevice.importExternalTexture API on Windows.

• 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.

• Gecko-specific CSS2Properties was renamed to CSSStyleProperties, to align with the latest web standard and for better interoperability with other browser engines.

Community Contributions

• With the release of Firefox 144, we are pleased to welcome the developers who contributed their first code change to Firefox in this release, 12 of whom were brand new volunteers! Please join us in thanking each of these diligent and enthusiastic individuals, and take a look at their contributions:

  • Alice Boxhall: 1981341
  • David [:david-loe]: 1726108
  • Diogo Sousa: 1987258
  • fdangers: 1975105
  • jocelyne.ah1: 1980995
  • Josh Berry: 1984553
  • Martin Bruse: 1987128
  • Mountain Dude: 1984695
  • parisoplop: 1984782
  • Riz: 1280266
  • s175911: 1985163