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Firefox 151 Is Now Available for Download, This Is What’s New
Highlights of Firefox 151 include support for local profile backups on Linux and macOS systems with the ability to restore them across platforms, support for merging multiple PDF files directly in Firefox’s built-in PDF viewer, address autofill support for users in the Netherlands, and the general availability of local network access restrictions.
Firefox 151 also adds support for restoring extensions and themes installed in a Firefox Desktop profile directory in cases where the profile directory is moved or restored to a different location or a different operating system, and improves support for multi-monitor setups by correctly reporting the screen resolution via JS APIs.
Update (by Roy)
Adding two more:
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Ubuntu Handbook ☛ Firefox 151.0 Released with Auto-Backup for GNU/Linux & New Home Page
Firefox 151.0, the new monthly release of the free open-source web browser, is available to download now! The new version introduced more security features, redesigned the layout of the home (new tab) page, and added more PDF editing features.
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OMG Ubuntu ☛ Firefox 151: New Tab design changes, PDF merging + more
The new tab page has a (ever-so-slightly) new look and a new name in Firefox 151, the newest version of Mozilla’s famous open-source web browser that begins roll out today, May 19, 2026. Now called Firefox Home, the new tab page has a “new look and feel”, to quote Mozilla. It’s not quite that dramatic, though the rounded search bar draws from the upcoming Nova redesign with its rounded pill shape (it is also no longer sticky on scroll): Stories stay put, but the ‘follow’ topic button is now an plus-sign icon left of the section header.