I came across 1 nuggets about the topic : performance on internet.
You can search these links on my public listing page on learning paths
woltapp/blurhash: A very compact representation of a placeholder for an image.
However! The trick to using the algorithm efficiently is to not run it on full-sized data. The fine detail of an image is all thrown away, so you should scale your images down before running BlurHash on them. If you are creating thumbnails, run BlurHash on those instead of the full images.