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

https://catchjs.com/Blog/PerformanceInTheWild

by faitswulff • 6 years ago

15 2 6 years ago

CA

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2

blacksqr• 6 years ago

* Make as few requests as you can. Number of requests matters more than number of kilobytes transferred.

* For the request you have to make, do them over HTTP2 or greater if you can.

* Strive to avoid render blocking requests when you can, prefer async loading when possible.

olliej• 6 years ago

Biggest slowdown source was iframes in onlod handlers. Would be interesting to see what those iframes were for, or at least what proportion are ads and trackers.

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