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Text case changes the size of QR codes

Text case changes the size of QR codes

5 comments

·November 1, 2025
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FinnKuhn

This also seems to work for URLs so next time I will create a QR code I will keep this in mind. Really useful!

I tested this with the following example: https://imgur.com/a/hTsvV3Z

zygentoma

Wouldn't it have been much more sensible to have a lowercase version of alphanumerics in the QR code standard? Almost all URLs are lowercase, and even if the have capitalised parts, in most cases they're case-insensitive.

future10se

A similar article was posted earlier this year, discussion here: https://news.ycombinator.com/item?id=43149077

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mrasong

First time learning about this detail.