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Reblogged by slightlyoff@toot.cafe ("Alex Russell"):
scottjehl@mstdn.social ("Scott Jehl") wrote:
I've been doing web performance work for a number of years now and I've seen over and over that if there is one development pattern that will make or break your site's delivery performance: it's whether you serve useful HTML upfront, or you serve un-useful HTML upfront and populate it long after that using client-side code.
If you're doing the latter (and many popular sites are!), that's often the most important thing you can change to improve your website's delivery performance.