I’ve been dealing with QR codes recently, as one of my side projects generates them, and I got curious about how much data you can really fit in a QR code. Specifically, I wondered how much of my favorite book I could fit on one QR code. QR Code versions QR Codes have different versions, but they’re not versions as you’d generally think about them, version in this case just means a particular size. Version 1 has 21 rows of “modules”, or dots, and 21 columns of modules. Version 2 is ...
