[Changelog] What’s New in Mozilla Firefox 90 and Later Versions

In this exclusive changelog article, we are providing information about all versions of Mozilla Firefox web browser released after version 90.0 to public. You’ll find the release date and what’s new in each version of Mozilla Firefox browser.

Mozilla Firefox is a popular web browser available for Windows, Linux and Mac operating systems. You can download the latest version of Mozilla Firefox from following article:

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For your convenience, in this version history article, we’ll list all changes, fixes, improvements and new features found in all versions of Mozilla Firefox browser (version 90 and later).

What’s New in Mozilla Firefox 90.0?

Mozilla Firefox 90.0 version was released on July 13, 2021. It came with following new features, changes, fixes and improvements:

• New Firefox versions come with Proton design UI with floating tabs (How-to Disable Guide)
• On Windows, updates can now be applied in the background while Firefox is not running. (How-to Disable Guide)
• Firefox for Windows now offers a new page about:third-party to help identify compatibility issues caused by third-party applications.
• Exceptions to HTTPS-Only mode can be managed in about:preferences#privacy page.
• Print to PDF now produces working hyperlinks.
• Version 2 of Firefox’s SmartBlock feature further improves private browsing. Third-party Facebook scripts are blocked to prevent you from being tracked, but are now automatically loaded “just in time” if you decide to “Log in with Facebook” on any website.
• The “Open Image in New Tab” context menu item now opens images and media in a background tab by default. (How-to Restore “View Image” Option)
• Most users without hardware accelerated WebRender will now be using software WebRender. (How-to Disable Guide)
• Improved software WebRender performance.
• FTP support has been removed.
• Various security fixes
• Various bug fixes and new policies have been implemented.
• Developer improvements

What’s New in Mozilla Firefox 91.0?

Mozilla Firefox 91.0 version was released on August 10, 2021. It came with following new features, changes, fixes and improvements:

• Building on Total Cookie Protection, a more comprehensive logic added for clearing cookies that prevents hidden data leaks and makes it easy for users to understand which websites are storing local information.
• Firefox now supports logging into Microsoft, work, and school accounts using Windows single sign-on.
• The simplify page when printing feature is back! When printing, under More settings -> Format select the Simplified option when available to get a clutter-free page. (How-to Restore Old Classic Print Dialog UI)
• HTTPS-First Policy: Firefox Private Browsing windows now attempt to make all connections to websites secure, and fall back to insecure connections only when websites do not support it.
• Added a new locale: Scots (sco).
• The address bar now provides Switch to Tab results also in Private Browsing windows.
• Firefox now automatically enables High Contrast Mode when “Increase Contrast” is checked on MacOS.
• Firefox now does catch-up paints for almost all user interactions, enabling a 10-20% improvement in response time to most user interactions.
• Various security fixes
• Various bug fixes and new policies have been implemented.
• Developer improvements

What’s New in Mozilla Firefox 92.0?

Mozilla Firefox 92.0 version was released on September 07, 2021. It came with following new features, changes, fixes and improvements:

• More secure connections: Firefox can now automatically upgrade to HTTPS using HTTPS RR as Alt-Svc headers.
• Full-range color levels are now supported for video playback on many systems.
• Mac users can now access the macOS share options from the Firefox File menu.
• Support for images containing ICC v4 profiles is enabled on macOS.
• Firefox performance with screen readers and other accessibility tools is no longer severely degraded if Mozilla Thunderbird is installed or updated after Firefox.
• macOS VoiceOver now correctly reports buttons and links marked as ‘expanded’ using the aria-expanded attribute.
• An open alert in a tab no longer causes performance issues in other tabs using the same process.
• Canonical is now building the official Firefox snap. It’s also now available on two additional architectures, ARMhf and ARM64.
• The bookmark toolbar menus on macOS now follow Firefox visual styles.
• Certificate error pages have been redesigned for a better user experience.
• Continuing work to restructure Firefox’s JavaScript memory management to be more performant and use less memory.
• Various security fixes
• Various bug fixes and new policies have been implemented.
• Developer improvements

What’s New in Mozilla Firefox 93.0?

Mozilla Firefox 93.0 version was released on October 05, 2021. It came with following new features, changes, fixes and improvements:

• Firefox now supports the new AVIF image format, which is based on the modern and royalty free AV1 video codec. It offers significant bandwidth savings for sites compared to existing image formats. It also supports transparency and other advanced features.
• Firefox PDF viewer now supports filling more forms (XFA-based forms, used by multiple governments and banks).
• When available system memory is critically low, Firefox on Windows will automatically unload tabs based on their last access time, memory usage, and other attributes. This should help reduce Firefox out-of-memory crashes. Switching to an unloaded tab automatically reloads it. (How-to Disable Guide)
• To prevent session loss for macOS users who are running Firefox from a mounted .dmg file, they’ll now be prompted to finish installation. This permission prompt only appears the first time these users run Firefox on their computer.
• Firefox now blocks downloads that rely on insecure connections, protecting against potentially malicious or unsafe downloads. (How-to Disable Guide)
• Improved web compatibility for privacy protections with SmartBlock 3.0.
• Introducing a new referrer tracking protection in Strict Tracking Protection and Private Browsing.
• Introducing Firefox Suggest, a faster way to navigate the web. (How-to Disable Guide)
• The VoiceOver screen reader now correctly reports checkable items in accessible tree controls as checked or unchecked.
• The Orca screen reader now works correctly with Firefox, no longer requiring users to switch to another application after starting Firefox.
• TLS ciphersuites that use 3DES have been disabled. Such ciphersuites can only be enabled when deprecated versions of TLS are also enabled.
• The download panel now follows the Firefox visual styles.
• Various security fixes
• Various bug fixes and new policies have been implemented.
• Developer improvements

What’s New in Mozilla Firefox 94.0?

Mozilla Firefox 94.0 version was released on November 02, 2021. It came with following new features, changes, fixes and improvements:

• Firefox no longer warns you by default when you exit the browser or close a window using a menu, button, or three-key command. This should cut back on unwelcome notifications which is always nice. However, if you prefer a bit of notice, you’ll still have full control over the quit/close modal behavior. All warnings can be managed within Firefox Settings. (How-to Restore Guide)
• Addition of six new seasonal Colorways themes (How-to Use Guide)
• Firefox now supports the new Snap Layouts menus when running on Windows 11.
• On Windows, there will now be fewer interruptions because Firefox won’t prompt you for updates. Instead, a background agent will download and install updates even if Firefox is closed.
• With this release, power users can use about:unloads to release system resources by manually unloading tabs without closing them.
• Firefox macOS now uses Apple’s low power mode for fullscreen video on sites such as YouTube and Twitch. This meaningfully extends battery life in long viewing sessions.
• And on Linux, Mozilla has improved WebGL performance and reduced power consumption for many users.
• To better protect all Firefox users against side-channel attacks such as Spectre, Firefox is introducing Site Isolation. It will be rolled out to Firefox 94 users over the next few weeks.
• Mozilla is rolling out the Firefox Multi-Account Containers extension with Mozilla VPN integration. This lets you use a different server location for each container.
• Reduced the overhead of using performance.mark() and performance.measure() APIs with a large set of performance entries.
• Modified paint suppression during load to greatly improve warmload performance in Site Isolation mode.
• You’ll also notice a small reduction in Javascript memory usage.
• With this release, you’ll notice faster Javascript property enumeration.
• Implemented better scheduling of garbage collection which has improved some pageload benchmarks.
• This release also sees reduced CPU usage during socket polling for HTTPS connections.
• Additionally, you’ll notice faster storage initialization.
• Improved cold startup by reducing main thread I/O.
• Closing devtools now reclaims more memory than ever before.
• Improved pageload (especially with Site Isolation mode) by setting a higher priority for loading and displaying images.
• Enterprise users now have more control over Firefox deployments with the availability of MSIX package on Windows platforms.
• Various security fixes
• Various bug fixes and new policies have been implemented.
• Developer improvements

What’s New in Mozilla Firefox 95.0?

Mozilla Firefox 95.0 version was released on December 07, 2021. It came with following new features, changes, fixes and improvements:

• RLBox – a new technology that hardens Firefox against potential security vulnerabilities in third-party libraries – is now enabled on all platforms.
• You can now download Firefox from Microsoft Store on Windows 10 and Windows 11 platforms.
• Reduced CPU usage on macOS in Firefox and WindowServer during event processing.
• Reduced the power usage of software decoded video on macOS, especially in fullscreen. This includes streaming sites such as Netflix and Amazon Prime Video.
• You can now move the Picture-in-Picture toggle button to the opposite side of the video by using the new context menu option “Move Picture-in-Picture Toggle to Left (Right) Side”.
• To better protect Firefox users against side-channel attacks such as Spectre, Site Isolation is now enabled for all Firefox 95 users.
• After starting Firefox, users of the JAWS screen reader and ZoomText magnifier will no longer need to switch applications in order to access Firefox.
• You’ll find the state of controls using the ARIA switch role is now correctly reported by Mac OS VoiceOver.
• You’ll see a faster content process startup on macOS.
• Memory allocator improvements.
• Improved page load performance by speculatively compiling JavaScript ahead of time.
• Added a User Agent override for Slack.com, which allows Firefox users to use more Call features and have access to Huddles.
• Various security fixes
• Various bug fixes and new policies have been implemented.
• Developer improvements

What’s New in Mozilla Firefox 96.0?

Mozilla Firefox 96.0 version was released on January 11, 2022. It came with following new features, changes, fixes and improvements:

• Significant improvements in noise-suppression and auto-gain-control as well as slight improvements in echo-cancellation to provide users with a better overall experience.
• Significantly reduced main-thread load.
• Firefox will now enforce the Same-Site=lax cookie policy by default which helps defend against Cross-Site Request Forgery (CSRF) attacks.
• On macOS, command-clicking links in Gmail now opens them in a new tab as expected.
• Fixes an issue where video intermittently drops SSRC.
• It also fixes an issue where WebRTC downgrades screen sharing resolution to provide users with a clearer browsing experience.
• Fixed video quality degradation issues on certain sites.
• Detached video in fullscreen on macOS has been temporarily disabled to avoid some issues with corruption, brightness changes, missing subtitles and high cpu usage.
• Security fixes
• Various bug fixes and improvements
• New group policies implemented
• Developer improvements

What’s New in Mozilla Firefox 97.0?

Mozilla Firefox 97.0 version was released on February 08, 2022. It came with following new features, changes, fixes and improvements:

• Firefox now supports and uses new Windows 11 style overlay scrollbars. (How-to Restore Full Classic Scrollbars)
• 18 colorway themes have been removed.
• On macOS, some improvements have been made to system font loading which makes opening and switching to new tabs faster in certain situations.
• Support for directly generating PostScript for printing on Linux has been removed. Printing to PostScript printers still remains a supported option.
• Security fixes
• Various bug fixes and improvements
• New group policies implemented
• Developer improvements

What’s New in Mozilla Firefox 98.0?

Mozilla Firefox 98.0 version was released on March 08, 2022. It came with following new features, changes, fixes and improvements:

• New optimized download flow behavior which downloads files automatically (How-to Restore Classic Download Prompt)
• In this release, some users who had previously configured a default engine might notice their default search engine has changed since Mozilla was unable to secure formal permission to continue including certain search engines in Firefox.
• Security fixes
• Various bug fixes and improvements
• New group policies implemented
• Developer improvements

What’s New in Mozilla Firefox 99.0?

Mozilla Firefox 99.0 version was released on April 05, 2022. It came with following new features, changes, fixes and improvements:

• You can now toggle Narrate in Reader Mode with the keyboard shortcut “n.”
• You can find added support for search with or without diacritics in the PDF viewer.
• The Linux sandbox has been strengthened: processes exposed to web content no longer have access to the X Window system (X11).
• Firefox now supports credit card autofill and capture in Germany and France.
• Security fixes
• Various bug fixes and improvements
• New group policies implemented
• Developer improvements

Read changelog of newer versions of Mozilla Firefox web browser:

[Changelog] What’s New in Mozilla Firefox 100 and Later Versions

[Changelog] What’s New in Mozilla Firefox 110 and Later Versions

[Changelog] What’s New in Mozilla Firefox 120 and Later Versions

Also Check:

Download Mozilla Firefox Offline Installer

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