Note from 22 December 2020
We should use both dns-prefetch and preconnect (separately) to speed up connexions to additional servers in most browsers:
We should use both dns-prefetch and preconnect (separately) to speed up connexions to additional servers in most browsers:
The present and potential future of progressive image rendering
So if the browser manages to download 6 kB then stalls, then AVIF can produce a better result. But since the AVIF rendering is only two-pass, if the…
        
        
      Barry Schwartz
         and 
        
        
      Barry Pollard
        
    
Google On Why Google Search Console LCP Is Not Wrong
Caching should be a "cherry on top" to boost speed, rather than the only reason you have a fast site.
View Transitions Break Incremental Rendering
Instead of showing users that this thing is the same as that thing, we’ve told them, perhaps with extra motion/panache, that even though these the…
Web font file size study: a variable font addition
The sum is smaller than the parts. A variable font that has both normal and heavy (bold) weight (and also everything in between) is slightly smaller…
I wasted a day on CSS selector performance to make a website load 2ms faster
It was at this point that the second penny dropped and I realised I’d been duped by a graphing misunderstanding and my own enthusiasm for improving…