This resource is awesome. I wanted to have the smallest readable QR code for my ... | Hacker News

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		slig on Nov 17, 2024 \| parent \| context \| favorite \| on: Creating a QR Code step by step This resource is awesome. I wanted to have the smallest readable QR code for my printables pages footer [1], and I discovered there that it's possible to encode URLs in "Alphanumeric mode", version 1, using only uppercase characters, e.g., HTTPS://FOO.CC/ABCDEFGHIJ, so I got a three letter domain name and built the simplest URL shortener hosted on a CF worker. [1]: https://pdf.ahaprintables.com/pdf/preview/aha/zebra-puzzles-... (PDF)

davchana on Nov 18, 2024 [–]

Would you please share more information about it? Thanks.

slig on Nov 18, 2024 | [–]

The URL shortener only use uppercase letters for the path of the URL, the domain and protocol are not case sensitive. Modern phones can read such QR code easily and identify them as URL.

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