Firefox 151 Launches With Redesigned New Tab Page, PDF Merging Feature

Mozilla released Firefox 151 today, May 19, 2026, introducing a redesigned new tab page now called Firefox Home and a new PDF merging tool.

“The new tab page has a new look and feel,” a Mozilla spokesperson said. The redesign includes a rounded search bar that draws from the upcoming Nova interface, and the search bar is no longer sticky when scrolling.

Users will notice that the “follow” topic button has been replaced with a plus-sign icon to the left of the section header. Stories remain in place, and the overall layout is cleaner.

Background

Firefox 151 is the latest version of Mozilla’s open-source browser, rolling out globally starting today. The new tab page rename from “New Tab” to “Firefox Home” marks a shift toward a more personalized start experience.

The rounded pill-shaped search bar is a precursor to Mozilla’s upcoming Nova redesign, which aims to modernize the browser’s interface. PDF merging, a feature long requested by users, is now included, allowing users to combine multiple PDFs directly within the browser.

What This Means

This update signals Mozilla’s commitment to incremental improvements ahead of the larger Nova overhaul. The new tab redesign enhances user control and visual consistency.

For everyday users, the PDF merging tool adds practical functionality without requiring third-party extensions. The removal of the sticky search bar may improve scrolling smoothness.

Firefox continues to evolve as a privacy-focused alternative, and these changes reflect Mozilla’s effort to balance aesthetics with utility.