There certainly is an SVG thing but I don't remember the name.
I think Blurhash is the way it is because Wolt is an app and not a website, so the decoder is already loaded when you open it. For browser use, SVG would be more straightforward.
True, but we have GZip for that, and you don't need a lib to parse it. Actually, it would be nice to compare the overall size needed for both Blurhash lib + a bunch of hashes vs a bunch of SVG placeholders glued together.
I think Blurhash is the way it is because Wolt is an app and not a website, so the decoder is already loaded when you open it. For browser use, SVG would be more straightforward.