nayuki / QR-Code-generator

High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.

Home Page:https://www.nayuki.io/page/qr-code-generator-library

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Maximum Capacity of Characters

renchris opened this issue · comments

I am trying to generate a QR code for Version 2 (25x25) Quantile Error Correction Level, which should allow up to 29 alphanumeric characters (https://www.qrcode.com/en/about/version.html)

image

However, it's only allowing me to input a maximum of 20 characters. How would I configure this so that it allows for the correct maximum capacity? Is this a setting I have incorrect or a bug?

Apparently, lowercase letters are not included in the alphanumeric standard and that it results resolves to the binary amounts (https://stackoverflow.com/questions/50361410/how-do-lower-case-letters-works-in-qr-code)