Essential Upgrades: Top Extensions to Supercharge Firefox 121.0

By ANAS KHAN 7 Min Read

Firefox 121.0, the latest version of Mozilla’s popular web browser, brings along with it a plethora of essential upgrades that are set to supercharge your browsing experience. One standout feature is the inclusion of top extensions that seamlessly integrate into Firefox, allowing users to tailor their browsing experience to suit their unique needs. These extensions offer a wide range of functionalities, from improving privacy and security with robust ad-blockers and anti-tracking tools to enhancing productivity through built-in note-taking apps and efficient tab management systems. With Firefox 121’s Essential Upgrades, users can now navigate the vast online landscape with ease while enjoying heightened speed and performance.

Firefox 121.0: download and update

Firefox 121.0: download and update

All newly released Firefox updates are accessible through the built-in upgrading system of the browser. In the following days, the update will be deployed automatically on the majority of user systems.

Those who prefer not to wait can manually install the update using Firefox. Upon its official release on December 19, 2023, the extension will be immediately installable within Firefox.

Simply navigate to Menu > Help > About Firefox to perform an update check. It is possible to apply updates directly from the interface.

The official distribution locations are as follows:

  • Download Stable for Firefox.
  • Firefox beta installation
  • Daily download at night
  • Firefox ESR installation
  • Android version of Firefox on Google Play

Firefox 121.0: Major changes

Firefox 121.0: major changes

By default, Wayland Composer is used on Linux.

By default, Firefox uses Wayland Composer on Linux rather than XWayland. This, according to Mozilla, “enables swipe-to-navigate, per-monitor DPI configurations, touchpad and touchscreen gesture support, enhanced graphics performance, and more.”

A constraint of picture-in-picture windows is that they necessitate an extra click or adjustment. By default, the PiP window does not remain in the foreground. On Bugzilla, the issue is extensively discussed.

Full extension support for Firefox for Android

Although it was introduced a week ago, this remains a significant advancement for Firefox on Android. Firefox Stable has been expanded beyond a restricted set of widely used extensions. All stable users can create and install extensions for the mobile version of Firefox.

This is a significant advancement for Firefox that may impact the browser better in the long term. This is largely because it is the only significant web browser that supports mobile extensions.

For parental control

To implement limitations on the websites or content that your children can access during their sessions, you may use the following extensions: replace objectionable words on websites, block distracting sites, or require passwords to access pages.

  • Focus on your duties by blocking distracting websites with LeechBlock NG.
  • Implement a block site policy where access to particular websites is restricted at specific times of the day or requires a primary password.

For students

Some extensions may also be of assistance with academics and maintaining productivity for you or your family.

  • Notes implemented in Firefox: Utilise a panel on the left to rapidly access any notes that you create.
  • Utilize the impulse blocker to temporarily obstruct distracting websites.
  • Utilize a text-to-speech voice reader to read aloud. With a few taps, the current web page or specified text can be read aloud.
  • Spell and Grammar Checker by LanguageTool Utilise this extension to edit your academic papers for misspellings and grammatical errors.
  • Utilize a tomato clock to maintain concentration and take necessary pauses. The timer can be programmed to either focus or pause for a specified period.
  • Simply double-click a word to access its definition in Dictionary Anywhere. This extension supports the following languages: English, French, German, and Spanish.
  • Unhook: Eliminate Comments on YouTube Recommended Videos; Maintain Concentration by Blocking YouTube Recommendations.


Firefox 121, the latest version of Mozilla’s popular web browser, offers essential upgrades to enhance the browsing experience. Top extensions are included, allowing users to customize their browsing experience to suit their unique needs. These extensions offer a wide range of functionalities, from improving privacy and security with robust ad-blockers and anti-tracking tools to enhancing productivity through built-in note-taking apps and efficient tab management systems.

Firefox 121.0 major changes include the default use of Wayland Compositor on Linux, which brings support for touchpad and touchscreen gestures, swipe-to-nav, per-monitor DPI settings, improved graphics performance, and more. Firefox Stable is now available for download on Google Play, Firefox Beta, Nightly, and ESR. Firefox 121.0 also includes full extension support for Android, making it the only major web browser that supports extensions on mobile. These extensions can be used for parental control, student productivity, and more.


What extensions should I get for Firefox?

Depending on your requirements, the following are some of the most beneficial Firefox extensions you should install on your browser:
Productivity enhancement and time monitoring are the primary functions of Clockify.
Tree Style Tab—ideal for tab organization
Lower them all!
For enhanced browser performance and privacy protection, uBlock Origin is the superior option.

What is the pixel-perfect addon for Firefox?

Pixel Perfect is an extension for Firefox that enables designers and web developers to effortlessly incorporate semi-transparent layers (images) into a web composition. As a result, these layers can be employed to compare pixels per pixel between a given layer and the page.

What is the Firefox extension for better privacy?

Decentraleyes is a browser extension that prevents websites from monitoring your location on the Firefox and Chrome web browsers. This is accomplished by intercepting queries to third-party content delivery networks and substituting them with the current website’s CDN.

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