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In most cases uppercase vs lowercase doesn’t matter. Compression work either well. An interesting exception are QR codes. They are substantially smaller if you
by the_mitsuhiko 3y ago
In most cases uppercase vs lowercase doesn’t matter. Compression work either well. An interesting exception are QR codes. They are substantially smaller if you only use upper case characters because there is a more efficient encoding for them.
- tronster 3y agoI've only dabbled with QR codes but they are interesting. Do you have any links that go into more detail about uppercase making them smaller?
- the_mitsuhiko 3y agohttps://www.thonky.com/qr-code-tutorial/alphanumeric-mode-encoding https://www.thonky.com/qr-code-tutorial/alphanumeric-mode-en...
- lifthrasiir 3y agoIn addition to mitsuhiko's link, there is even a dedicated binary-to-text encoding suitable for the alphanumeric mode of QR codes: https://datatracker.ietf.org/doc/html/rfc9285 https://datatracker.ietf.org/doc/html/rfc9285