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Core Web Vitals are a set of speed metrics that are part of Google’s Page Experience signals used to measure user experience. We retrieve them using Google’s PageSpeed Insights API externally and internally.


  1. Get a free API key from Google
  2. Enter the received code as the env var PAGESPEED_API_KEY or through the settings panel.

After you sign on go to the top-right menu and go to the settings tab.

You can then insert your code in the text input.