We are thrilled to bring you the latest insights into Mozilla Firefox 121, a release that marks a significant milestone for Linux Wayland users. With a keen focus on enhancing user experience and performance, Mozilla has chosen to make Firefox 121 run in Wayland mode by default for all Linux users, a decision that resonates with the pulse of evolving display server needs on Linux.

Embracing the Future: Wayland Mode Unveiled

Better Graphics Performance

The shift to native Wayland mode brings forth a cascade of benefits, with improved graphics performance at the forefront. Users can now expect a seamless and visually enhanced browsing experience, especially on graphics-intensive websites and applications.

Crystal Clear Display on HiDPI Displays

One of the standout features of Firefox 121 in Wayland mode is the non-blurry rendering on HiDPI displays and fractional scaling. This refinement ensures that Firefox adapts to the varying resolutions of modern displays, providing users with crisp and clear visuals.

Enhanced Touchpad and Touchscreen Gestures

Firefox 121 under Wayland mode excels in supporting touchpad and touchscreen gestures, adding a layer of fluidity to the user interface. This optimization caters to the growing number of devices with touch capabilities, ensuring a responsive and intuitive browsing experience.

Per-Monitor DPI Settings Respect

The introduction of per-monitor DPI settings is a subtle yet impactful change in Firefox 121. This adjustment allows for a more tailored experience, as users can fine-tune the display settings based on their specific monitor configurations, contributing to a personalized and comfortable browsing environment.

A Glimpse into the Future

As the tech landscape evolves, embracing Wayland as the default mode signifies Mozilla’s commitment to staying ahead of the curve. Wayland is not just a feature; it is the future of modern, secure, and performant display servers on Linux. The momentum and demand for Wayland are undeniable, bringing new possibilities like HDR support to Linux.

Firefox 121: Beyond Wayland

Noteworthy Changes

Apart from the paradigm shift to Wayland by default, Firefox 121 introduces several other noteworthy changes. These include a new option to force-underline links in websites, making navigation more intuitive. Editing PDFs becomes easier with improved deletion capabilities for drawings, text, and images.

Voice Control on macOS and Microsoft AV1 Extension on Windows

Firefox 121 extends its reach to macOS users by introducing support for Voice Control commands. Additionally, Windows users are prompted to install the Microsoft AV1 Extension, enhancing the multimedia experience on the platform.

Linux-Specific Bug Fixes

Acknowledging the Linux community, Firefox 121 addresses specific issues, such as Picture-in-Picture window black borders, AppStream metainfo alignment in Firefox Flatpak, and dialogs/windows sizing irregularities in KDE Wayland. The update also resolves a mouse cursor icon inconsistency and a browsing history leakage problem in GNOME.

Web Platform Capabilities Expansion

In its pursuit of excellence, Firefox 121 expands its web platform capabilities. Developers can now leverage the support for hanging and each-line keywords in the CSS text-indent property. Furthermore, the addition of text-wrap: balance allows developers to harmonize line lengths in short, multi-line text blocks, contributing to a more aesthetically pleasing user interface.


In conclusion, Mozilla Firefox 121 stands as a testament to the commitment of providing Linux users with a solid, dependable, and integrated browsing experience. The defaulting to Wayland mode showcases an understanding of the evolving technological landscape, ensuring that Firefox keeps pace with the demands of the modern user.

Keep an eye out for the Firefox 121 update on your system, arriving as an in-app update, a background update for Firefox Snap users, or as a repo update for those using PPAs, AUR, etc. Alternatively, download Mozilla Firefox 121 directly from the official website, and let us know your thoughts in the comments section below. Stay tuned for the future of browsing with Firefox 121! ✨