Code coverage data is now exclusively in Searchfox

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Marco Castelluccio

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Mar 3, 2026, 6:28:54 AM (10 days ago) Mar 3
to dev-platform, Firefox Dev
Hello,
The https://coverage.moz.tools/ service has been retired and will
disappear shortly.

Coverage data is now only available in Searchfox, both at the directory
level (example
https://searchfox.org/firefox-main/rev/0fce12de99c5e7d74536d8f93cf9778ce6199a1f/,
coverage percentages in the "Coverage" column) and at the file level
(example
https://searchfox.org/firefox-main/rev/0fce12de99c5e7d74536d8f93cf9778ce6199a1f/browser/base/content/browser.js,
coverage data in the coverage strip on the left).

If you are browsing a file on Searchfox and coverage data is not
available, when you hover the coverage strip there is a link "Show
previous file revision with coverage".

Thanks!
- Marco.

Tom Ritter

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Mar 3, 2026, 6:34:58 AM (10 days ago) Mar 3
to Marco Castelluccio, dev-platform, Firefox Dev
Thank you for the steady improvement in our tooling.  Can I ask - what does  "There was coverage data for this file but not for this line." mean?  


-tom

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Tom Schuster

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Mar 5, 2026, 7:08:57 AM (8 days ago) Mar 5
to Marco Castelluccio, dev-platform, Firefox Dev
Hi!

This is very exciting. Thank you and Nicolas for working on this. When can we expect the data on searchfox to become available? I can't find "Show
previous file revision with coverage" in the UI. Is there an API for getting the coverage data?

Thanks
Tom

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