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Mozilla Automation Teamcanova1 min readrelease notesintro

Firefox Profiler Deployment (August 10, 2026)

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Summary

Firefox Profiler 0.8.0 is now live, adding CLI source‑map support, a new Network track, and several internal optimizations. The release also improves error handling, marker handling, and updates localizations.

  • CLI now supports applying source maps, simplifying JavaScript symbolication.
  • Added a Network track derived from the timeline‑network schema for better network visualization.
  • Optimized symbolication by calling getRawFrameTableBuilderWithExistingContents only once per batch.
  • Improved error handling for CLI daemon startup and added better marker payload schemas.

Anyone profiling JavaScript or native code with Firefox Profiler or integrating its CLI should know the new features and bug fixes.

4/10
cliperformanceprofilingdevtoolsjavascript

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