FIREFOX 157 IS GETTING A COMPLETELY FRESH LOOK

Mozilla has officially started rolling out Firefox 157, bringing a major visual transformation to its browser across desktop and mobile. The update represents one of Firefox’s most significant design refreshes in years, with Mozilla changing the appearance of tabs, toolbars, menus, icons, New Tab pages and other parts of the browsing experience.

The redesign, which Mozilla has been developing under the Nova design direction, was tested extensively through Firefox Nightly before reaching the stable release. Mozilla says the goal was not to turn Firefox into a completely different browser, but to give its existing interface a more modern, flexible and consistent identity while preserving the features and principles that have defined Firefox.

A SOFTER, MORE MODERN FIREFOX

The most obvious change is visual. Firefox now uses softer and more rounded interface elements, including tabs, address bars, menus, panels and other controls. Mozilla has also refreshed its color palette, icons and themes, giving the browser a more contemporary appearance without changing the underlying browsing experience.

One of the important goals behind the redesign is consistency. Instead of desktop and mobile feeling like completely separate versions of Firefox, Mozilla is bringing them closer together through a shared design language. The same overall visual approach now carries across different parts of the browser and different device types.

Mozilla says the visual changes were designed without sacrificing browser performance. In other words, the redesign is primarily about how Firefox looks and feels rather than a fundamental change to its underlying browsing engine.

COMPACT MODE MAKES A COMEBACK

One of the most interesting parts of Firefox 157 is actually the return of an older feature.

Compact Mode is back.

The option reduces the amount of space used by tabs and toolbars, allowing more of the screen to be occupied by the webpage itself. This can be particularly useful on smaller displays, laptops with limited screen real estate and split-screen workflows.

Mozilla says an auto-compact option can also adjust the interface for smaller screens. Users who prefer a more spacious interface can continue using the standard appearance instead.

The return of Compact Mode is notable because it shows that Mozilla has been paying attention to feedback from Firefox users during the redesign process. Rather than simply introducing a new visual style, Mozilla adjusted the experience based on how people actually use the browser.

NEW THEMES AND MORE PERSONALIZATION

Firefox 157 also gives users more control over the browser's appearance.

Mozilla has introduced a new theme picker that makes it easier to change Firefox's visual style. Users can explore built-in themes, different color treatments and wallpapers, with light and dark variants available for the new themes.

This is part of a broader attempt to make Firefox feel more personal. Instead of giving everyone essentially the same interface, Mozilla wants users to be able to adapt the browser to their own preferences.

The customization extends to the New Tab experience as well.

THE NEW TAB PAGE GETS MORE CONTROL

Mozilla has expanded the customization options available on the Firefox New Tab page.

Users can now pin and organize shortcuts in a dedicated area, making frequently visited websites easier to keep within reach. Rather than relying entirely on automatically generated suggestions, the updated approach gives users more direct control over which sites appear on their homepage.

For people who use Firefox as their primary workspace, this seemingly small change can make the browser feel more organized. Frequently used websites, work tools and personal services can remain accessible without having to search through browsing history or bookmarks every time.

MORE THAN JUST A VISUAL UPDATE

Firefox 157 arrives after a busy period for Mozilla's browser. During the past year, Firefox has added or expanded several features beyond the traditional browser experience, including Split View, built-in VPN functionality and additional controls around AI features.

The redesign therefore represents a broader evolution of Firefox rather than an isolated cosmetic update. Mozilla is trying to modernize the browser while maintaining its identity as an independent, open-source browser with a strong emphasis on user control and privacy.

That distinction is important because the browser market has become increasingly dominated by Chromium-based browsers. Firefox continues to use Mozilla's own Gecko engine, giving it a different technical foundation from browsers such as Chrome, Edge and many other Chromium-based alternatives.

FIREFOX 157 KEEPS PRIVACY AT THE CENTER

Despite the major visual changes, Mozilla is emphasizing that the redesign does not represent a move away from Firefox's privacy-focused identity.

The company says its privacy protections remain built into the browser, while users continue to have control over settings related to browsing data, tracking protection and other aspects of their online experience.

Mozilla has also been giving users more control over AI-related functionality in Firefox. The company's current approach allows users to decide how AI features appear in their browser rather than making them an unavoidable part of the experience.

That approach gives the new Firefox an interesting position as browsers increasingly add AI-powered search, assistants and other automated features.

WHY THIS REDESIGN MATTERS

A browser's interface may appear relatively unimportant compared with speed, security or compatibility, but the design is something users interact with every time they open a tab.

Mozilla's challenge with Firefox 157 is therefore bigger than simply making the browser look newer. The company needs to create an interface that feels modern without abandoning the flexibility and control that longtime Firefox users expect.

The return of Compact Mode is particularly significant in that context. It suggests Mozilla isn't simply following a single design trend. Instead, the company is trying to balance a modern visual language with options for users who prefer a denser, more traditional workspace.

FIREFOX 157 ROLLOUT HAS BEGUN

Firefox 157 became available to Release-channel users on September 29, 2026, with the redesigned interface rolling out across desktop and mobile versions of Firefox. Mozilla's official release notes describe it as Firefox's biggest visual refresh in years.

The redesign had already been tested by Firefox Nightly users, giving Mozilla several months to refine the interface before the stable rollout. The final version is more restrained than some of the earliest experimental Nova designs, but the core visual changes remain clearly visible.

For existing Firefox users, the update means the browser may look noticeably different the next time it launches. For people who have moved away from Firefox over the years, Mozilla is clearly hoping the refreshed interface provides another reason to take a look.

THE NEW FIREFOX IS STILL FIREFOX

Firefox 157 does not attempt to reinvent the browser from scratch. Instead, Mozilla has taken the familiar Firefox experience and rebuilt much of its visual language around it.

The combination of rounded interface elements, refreshed colors, new themes, customizable New Tab shortcuts and the return of Compact Mode gives Firefox considerably more flexibility while maintaining its existing foundation.

For Mozilla, the bigger story is not simply that Firefox looks different. It is that the company is trying to make the browser feel more current without giving up the independence, customization and privacy controls that distinguish Firefox from many of its competitors.

The result is a Firefox that looks noticeably newer while still retaining the identity that longtime users recognize.