In just over 24 hours, Mozilla will officially release Firefox 141. As with every version, they've prepared the update at least a day in advance, so it's already available for download from their FTP server, specifically from this link . If you decide to download it now, keep in mind that this release isn't official, and it's not entirely certain that the final version won't be the same. It's not common, but it's not impossible that they might find something that needs fixing and re-upload the binaries and installers.
But the fact is, Firefox 141 is now available for download. Among the new features are functions like the ability to automatically group tabs . Firefox can even suggest names for these groups based on the tabs' content, making it easier to stay focused, save time, and reduce clutter. And since the entire process happens on your device, privacy remains a priority.
Other new features in Firefox 141
Users who prefer the vertical tab view also benefit from a new setting : they can now resize the tool areas at the bottom of the sidebar. This allows them to see more tabs and fewer tools by dragging down the dividing line, moving the excess controls to a more accessible dropdown menu.
In terms of performance, Firefox on Linux has improved significantly: it now uses less memory and it's no longer necessary to force a restart after applying updates from the package manager. Furthermore, address autocompletion has been enabled for users in Brazil, Spain, and Japan, facilitating faster and more accurate browsing.
Another interesting feature is that Firefox's address bar now functions as a unit converter . You can convert length, temperature, mass, force, and angular measurements directly from the bar, as well as convert time zones with commands like "now in GMT" or "10am EDT to CET". Clicking the result will automatically copy it to your clipboard.
Improvements in language support and web development
Regarding languages, the Valencian versions of Firefox now include a Catalan dictionary (Valencian variant) to improve spell checking. New languages have also been added to the automatic translation list, including Albanian, Gujarati, Hebrew, Hindi, Kannada, Malay, Malayalam, Persian, and Telugu.
Firefox is also better adapted to Windows 11, now using system font icons for title bar buttons, in line with the operating system's visual style. In addition, support for the WebGPU API has been enabled on Windows , resulting in a significant improvement in the graphics performance of web applications.
Firefox 141 also introduces improvements for developers
At the web development level, improvements have been introduced such as the new closedby attribute and its closedBy property for elements
Finally, the HTMLElement.showPopover() and HTMLElement.togglePopover() methods now accept new arguments (options.source and force), allowing for more granular control over popovers in the interface. Additionally, Firefox will automatically clear the forward and back navigation cache if it detects a Clear-Site-Data: "cache" header in the server response, improving temporary data management and privacy.
These new features demonstrate that Firefox not only continues to innovate in visible features, but also strengthens its web engine and its commitment to user experience.
Now available
As we've already explained, Firefox 141 is available starting today on Mozilla's FTP server , but the official release won't be until tomorrow at noon (Spanish time). At that time, it will become available on their official website , and shortly thereafter they will update their Flatpak and Snap packages, as well as the one in their official repository for Debian/Ubuntu-based distributions.