Firefox 156 Available With Its Built-In PDF Viewer Starting Up To 45% Faster

Written by Michael Larabel in Mozilla on 14 September 2026 at 11:09 AM EDT. 30 Comments
MOZILLA
Mozilla today published their Firefox 156.0 release binaries ahead of the official Tuesday announcement.

With Firefox 156 they are promoting their built-in PDF viewer as now starting up to 45% faster. Also on the performance side is improved memory and CPU usage when Firefox is displaying large JPEG images that in turn are scaled down to fit on a web page.

There are also a number of fixes in Firefox 156 like for high-sample-rate FLAC audio in MP4 failing on some websites, fixing various platform-specific issues, and other minor adjustments.

Firefox 156


Within the Firefox 156 nightly builds was also enabling Vulkan Video decoding for newer NVIDIA GPUs on recent versions of the NVIDIA driver, but sadly that didn't make it for the Firefox 156 release with it still being gated to nightly builds.

This isn't the most exciting Firefox update for Linux users in recent history, but if wanting this latest update you can grab Firefox 156 right now via ftp.mozilla.org.
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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.

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