Firefox Is Getting Its Biggest Redesign in Years. Then Mozilla Got Cold Feet.

Firefox is about to look very different—or at least, it was supposed to… Mozilla’s long-in-development Project Nova redesign is expected to roll out broadly with Firefox 157 on September 29, giving the browser softer tabs, refreshed icons, warmer colors, new themes, more consistent components, and the apparently legally required 2026 ingredient: rounded corners.

But the interesting design story isn’t what Mozilla added. It’s what it backed away from.

Early Nova designs were considerably bolder, with floating toolbars, gaps separating browser chrome from the webpage, heavier rounding, and pastel gradients. As Nova moved through testing, Mozilla dialed several of those ideas back. The gaps largely disappeared, the rounding became less aggressive, and Compact Mode returned after users complained about wasted space.

The result is less Firefox reinvents itself and more Firefox gets a very expensive haircut.

Firefox Joins the Great Rounding of Everything

Mozilla says it wants Firefox to feel “current, but not generic,” with a warmer palette inspired by fire, softer tab shapes and a subtle gradient around the active tab. It has also redesigned components and icons to create a more coherent design system across desktop and mobile.

There’s just one problem: rounded components, gradients and softer interfaces are precisely what everyone else is doing.

Apple has Liquid Glass. Google continues pushing softer Material styling. And seemingly every SaaS dashboard created since 2024 looks like someone discovered border-radius: 16px and refused to put it down.

Firefox risks modernizing itself directly into sameness.

Mozilla’s community certainly noticed. Feedback on Nova has included complaints about wasted screen space and the seemingly endless industry obsession with rounding every available corner. Mozilla responded to some of that criticism by restoring Compact Mode and experimenting with controls over interface roundness.

And that’s actually the smartest part of Nova.

The Real Design Lesson

Firefox could have imposed a fashionable new interface and told millions of users to get used to it. Instead, Mozilla tested the design publicly, listened when people hated parts of it, and changed them. That’s not glamorous design. It’s good UX.

For web designers, Nova is also a useful reminder that a design system shouldn’t exist simply to make everything prettier. Mozilla says the new system uses shared tokens, components and patterns so new Firefox features can feel integrated rather than bolted on.

That’s arguably more important than whether the tabs are 8px or 14px round.

Firefox 157 is currently scheduled for September 29, so we’ll soon find out whether Nova feels like a genuinely refreshed browser—or Firefox wearing the same rounded-corner uniform as everybody else.

Either way, one thing is reassuring. Compact Mode survived.

Alex Harper

Alex Harper is a web designer and UX specialist with 8+ years of experience creating intuitive, user-friendly digital experiences. Known for blending creativity with functionality, Alex helps brands turn ideas into seamless designs that engage and inspire.