Front-End Performance Checklist 2021
Smashing Magazine
JANUARY 11, 2021
web-vitals library can collect and send Core Web Vitals to Google Analytics, Google Tag Manager or any other analytics endpoint. So, if your year-over-year web performance metrics stay stable, that's usually a warning sign as you're actually regressing as the environment keeps improving ( details in a blog post by Gilles Dubuc ).
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