Firefox Tabs Just Got Rounded, and They're Perfect for Windows 11

Firefox is sporting a fresh new look that users will notice as soon as they open their browser. Tabs in Nightly (Firefox 145) now have softer, rounded corners, matching the friendly style of the vertical tab sidebar. Instead of sharp edges, everything feels smoother, making switching between sites a little more pleasant.

But it’s not just the tabs. Firefox is also updating buttons, the Address Bar, and text fields to match, giving the browser a cleaner, more unified feel. For Windows 11 users, these changes fit right in with the rounded design language already seen across modern apps.

Firefox’s New Rounded Tabs Look Right at Home on Windows 11

Mozilla has been gradually refining Firefox’s design on Windows, with updates like mica effects for context menus, the title bar, and the toolbar. This is another step in that direction. The rounder corners are easier on the eyes and add to the polished, welcoming feel of the browser.

These little design tweaks help Firefox stay up-to-date and pleasant, showing Mozilla’s focus to making the browser more welcoming based on user feedback and modern design standards.

If you want to see the new look, it’s live now in Firefox Nightly. No custom themes or tweaks needed. You can download Firefox Nightly from Mozilla’s website to try the updated tabs for yourself.

Regular Firefox users can expect to see this fresh design in an upcoming stable release, bringing the same welcoming, rounded style to everyone who values a browser that feels comfortable and modern.

That’s not all. Firefox is working to add an option to open external links next to the active tab and has introduced an enterprise policy to disable AI components in Firefox.

Additionally, Firefox Nightly now supports MKV video playback by default.