@slightlyoff @kurtextrem that is very cool indeed

Some upfront processing, ease of implementation on each tag? My favorite kind

I added a link to my notes about this kind of front end tricks

https://github.com/GuillaumeRossolini/il/blob/master/2-FRONTEND.md

@GuillaumeRossolini @slightlyoff

Here's a good article that you could add to your list, which summarizes the options and concludes that lqip images are probably a better options than blurhash/thumbhash. https://www.mux.com/blog/blurry-image-placeholders-on-the-web

But this css-only approach seems to be the holy grail - essentially 0 data transferred, instant rendering, good-enough/comparable placeholder image fidelity!