Firefox Profiler Deployment (September 22, 2026)

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

Highlights:

  • [fatadel] Show a category breakdown in profiler-cli (#6256)
  • [fatadel] Show allocation data in the cli (#6246)
  • [Florian Quèze] profiler-cli: add a thread list command (#6273)
  • [Florian Quèze] profiler-cli: add a thread list command (#6273)
  • [Nazım Can Altınova] Add a permalink command to profiler-cli for already published profiles (#6331)
  • [Florian Quèze] profiler-cli: add profile markers for cross-thread marker search (#6276)
  • [Nazım Can Altınova] Add --with-samply to “profiler-cli load” (#6339)

Other Changes:

  • [Florian Quèze] profiler-cli: name the process in the thread banner, and follow the queried thread (#6269)
  • [fatadel] Drive PII sanitization from marker schemas (#6291)
  • [fatadel] Move FileIO table labels into marker schemas (#6296)
  • [Markus Stange] Add missing finishRawMarkerTableBuilder. (#6318)
  • [fatadel] Fix the upload error button contrast (#6315)
  • [Markus Stange] Allow typed arrays in the nativeSymbols table (#6300)
  • [Markus Stange] Remove brittle test. (#6322)
  • [Markus Stange] Fix file extension typo. (#6325)
  • [Markus Stange] Typed arrays + flags for the FuncTable (#6323)
  • [fatadel] Convert extension text markers to structured payloads (#6314)
  • [Florian Quèze] profiler-cli: include per-marker fields and data in --list --json (#6275)
  • [Markus Stange] Speed up call tree sidebar by sharing work with the activity graph (#6329)
  • [Nazım Can Altınova] :clockwise_vertical_arrows: Sync: l10n → main (Sept 22, 2026) (#6341)
  • [Nazım Can Altınova] Bump profiler-cli version to 0.10.0 (#6342)

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

  • el: Jim Spentzos
  • ro: robbp

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