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Hacker News
@h4ckernews@mastodon.social  ·  activity timestamp 2 weeks ago

Text case changes the size of QR codes

https://www.johndcook.com/blog/2025/10/31/smaller-qr-codes/

#HackerNews #TextCase #QRcodes #SizeChange #TechNews #QRcodeDesign

John D. Cook | Applied Mathematics Consulting

Text case changes the size of QR codes

Changing the case of text can change the size of the corresponding QR code. This is one of the reasons Bitcoin moved from Base58 to bech32 encoding.
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