How much text fits?
One QR code holds up to about 2,900 Latin letters and digits. Korean, Japanese and Chinese characters take 3 bytes each in UTF-8, so about 980 of them fit. The more text you add, the denser the code gets and the harder it is to scan at small sizes, so we recommend staying under 300 characters.
Ideas
- Descriptions on museum labels or plant tags
- Instructions or inspection checklists on machines
- Clues for treasure hunts and escape rooms
- Serial numbers and notes for inventory