Firefox Profiler Deployment (October 21, 2025)

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

Highlights:

  • [Nazım Can Altınova] Implement fetching JS sources from browser via WebChannel (#5506)
  • [Florian Quèze] Add a ‘filter’ button next to the tooltip label of markers. (#5626)
  • [Florian Quèze] Show the ‘inl’ badge on inlined frames showing in marker stacks. (#5628)

Other Changes:

  • [Markus Stange] Streamline some code related to profile publishing (#5608)
  • [Nisarg Jhaveri] Remove “Back to home” link on import errors when not loading from file (#5279)

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

  • de: Michael Köhler
  • el: Jim Spentzos
  • en-GB: Ian Neal
  • es-CL: ravmn
  • fr: brumedautomne127
  • fur: Fabio Tomat
  • fy-NL: Fjoerfoks
  • ia: Melo46
  • it: Francesco Lodolo [:flod]
  • nl: Mark Heijl
  • pt-BR: Marcelo Ghelman
  • ru: Valery Ledovskoy
  • sv-SE: Andreas Pettersson
  • tr: Grk, Selim Şumlu
  • zh-CN: Olvcpr423
  • zh-TW: Pin-guang Chen

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