Mozilla announced in May 2026 that Firefox is receiving a significant visual overhaul called “Project Nova,” featuring rounded interface elements, a refreshed color palette, and a redesigned Settings section aimed at making privacy controls easier to find and use.
The redesign introduces bubble-like tabs and fire-inspired colors throughout the browser. Mozilla is also updating icons to improve visual consistency across light and dark themes. New color themes will apply to the entire browser window and support both light and dark modes. Mozilla says it is also “exploring” controls for the shape of tabs and other UI elements, along with additional wallpapers and themes.
A key feature of the redesign is a dedicated toggle to disable all present and future AI features. Mozilla notes that Firefox’s AI models are not downloaded to a user’s computer unless actively chosen, but the new Settings layout will make it easier to see which AI models are installed and how much storage they occupy. Mozilla draws a contrast with Google Chrome, which has faced criticism over a 4GB download associated with its AI features.
Project Nova will also restore Firefox’s compact mode, which condenses browser controls such as the forward and backward buttons. The new design will additionally improve access to tab groups, split view, and vertical tabs.
Mozilla plans to begin rolling out the redesign later in 2026. Separately, the company released Firefox 151 this week, which includes support for the Web Serial API — allowing websites to control devices or deliver firmware without native applications — along with an updated Firefox Home page, new wallpapers, and the ability to merge multiple PDFs in the browser’s built-in PDF viewer.
Source: The Verge