We rendered a million web pages to find out what makes the web slow

We rendered the top 1 million pages on the web, tracking every conceivable performance metric, logging every error, noting every requested URL. To our knowledge this produces the first dataset that connects performance, errors, and library use on the web. In this article we analyze what the data can tell us about creating high performance web sites.

https://catchjs.com/Blog/PerformanceInTheWild

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