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The split-screen feature introduced in Firefox 149 has been improved. You can now right-click on any link and select “Open link in split view,” and you can also swap the two halves of a split window. The built-in PDF viewer/editor can now also reorder PDF documents and copy, paste, delete, or export pages. You can also copy and save images contained within PDFs. The ability to merge multiple PDF documents into a single file is expected to follow soon. Firefox’s translation feature, which operates locally without cloud services and thus respects your privacy, can now do more than just translate
Firefox 150 turns its PDF viewer into a real PDF editor… As Mozilla explains on the Firefox blog, it's "progressively rolling out in the US, UK, Germany, and France"... and "progressively" does mean slowly, as a fresh install of Firefox 149.0 isn't giving me the option to to test it out when I log into Mozilla. …
… Mozilla has now integrated this AI into its Firefox browser. …
… Mozilla plans to release Firefox 151 in four weeks on May 19th, 2026. What's new in Firefox 150? The split-screen feature introduced in Firefox 149 has been improved. …
… "We don't have any other goal at Firefox beyond , other than to build the best browser and preserve an open Internet." Mozilla does use AI tools to build Firefox, Varma acknowledged. …
… To turn off the Copilot toolbar icon as well, head to Appearance > Copilot and sidebar > Copilot and turn off "Show Copilot button on the toolbar." Mozilla Firefox You have to type about:config into the address bar and press Enter to access the advanced settings. …
… Available as a Chrome and Firefox extension, this add-on isn’t necessary, but its search-result visual warnings can be helpful. …
… The other is Secured Browsing , in which the ESET antivirus engine screens for any processes that might try to interfere with Chrome, Edge, and Firefox’s normal operation. …