Unfortunately the most important thing here is missing - the whole explanation, like how did we get there, what those fonts can do and so on..

Maybe it's not practical for day-to-day use but the way this hacks the font to produce something completely different is amazing!

It doesn’t seem to like spaces that much, the code for [QR coded] is broken for me on safari ios. When the space is removed it’s a working qrcode again

Font rendering should scare you

Impressive, but on iOS 27 even one of the examples don't work. Seems like it has an issue with spaces. https://imgur.com/a/tZGqtjR

[dupe] a recent Show HN: https://news.ycombinator.com/item?id=48703200

Spaces are definitely broken in Safari.