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"Largest Contentful Paint" web vital metric support

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  • 1 has this problem
  • Last reply by jscher2000

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I would like to know if there are any plans to support the new web vital Google metric "Largest Contentful Paint" on Firefox? As mentioned on it is not supported today, but it seems to become a standard to measure user experience on websites, already adopted by many different tools.

Best regards, Guillaume

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Please ignore spam replies about third-party support you may have received earlier and do not call a supplied phone number or send email.
This is the official support forum and we do not supply support by phone.

There only seems to be an initial definition for this API.

See also:


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Thank you very much, but what does it mean conretely?


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Judging from a lack of search results, this does not appear likely to arrive in Firefox soon.


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