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⇱ Firefox 145 Beta Released With 32-bit Linux Support Dropped - Phoronix


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Firefox 145 Beta Released With 32-bit Linux Support Dropped

Written by Michael Larabel in Mozilla on 14 October 2025 at 10:55 AM EDT. 44 Comments
Firefox 144.0 is now available but it's not a particularly exciting browser release. But with Firefox 144 stable now comes Firefox 145 beta and that is a bit more noteworthy as it ditches 32-bit Linux support.

As covered last month, Firefox is ending 32-bit Linux support with the Firefox 144 series being the last to support Linux 32-bit or Firefox 140 for the ESR series.

With Firefox 145 Beta now available, 32-bit Linux is no longer supported with their new releases moving forward. Mozilla is encouraging users to install a 64-bit version of Firefox.

Aside from ending 32-bit Linux support, Firefox 145 Beta isn't too exciting but does make horizontal tabs now slightly more round, a few JavaScript additions, and then Firefox finally enabling Matroska support for commonly used codecs. The Matroska support covers the AVC, HEVC, VP8, VP9, AV1, AAC, Opus, and Vorbis codecs.

👁 Firefox 145 Beta


Firefox 145 Beta downloads and more details at Firefox.com.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.