Firefox Tooling Announcements: Firefox Profiler Deployment (May 7, 2026)

The latest version of the Firefox Profiler is now live! Check out the full changelog below to see what’s changed:

Highlights:

• [Markus Stange] Use custom splitter component (#4606)


• [fatadel] Fix Download button text color when clicked (#5985)


• [Nazım Can Altınova] Add profiler-cli for querying profiles (#5963)
  
  
  
  • Firefiox Profiler now has a CLI! You can download it here: https://www.npmjs.com/package/@firefox-devtools/profiler-cli
  
  
  
  


• [Nazım Can Altınova] Fix the unnecessary stringify of Uint8Array contents during zip profile extraction (#6004)

Other Changes:

• [Samuel Glauser] Fix fullscreen icon size in bottom box (#5987)


• [Nazım Can Altınova] Bump profiler cli version to 0.1.0 (#5996)


• [Markus Stange] Switch from max-height to maxHeight in JSX style={{…}}. (#5990)


• [carverdamien] Fix comment about how time and duration are stored (#5997)


• [Nazım Can Altınova] Do not show console error when libnames are failed to parse as a URL (#5993)


• [Nazım Can Altınova] Fix the unnecessary stringify of Uint8Array contents during zip profile extraction (#6004)

Big thanks to our amazing localizers for making this release possible:

• en-CA: chutten


• en-CA: Saurabh


• en-GB: Ian Neal


• es-CL: ravmn


• fy-NL: Fjoerfoks


• ia: Melo46


• nl: Mark Heijl


• ru: Valery Ledovskoy


• sv-SE: Andreas Pettersson

Find out more about the Firefox Profiler on profiler.firefox.com! If you have any questions, join the discussion on our Matrix channel!

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