QR code knowledge base
How QR codes work and what to do with them
These are explanatory pieces: they answer how to understand something, not what to buy. From the mechanics behind a scan to the details of printing, one topic at a time.
All articles
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What resolution a printed QR code needs to scan
A QR code that will not scan is often not drawn wrong but printed at a size and resolution that do not match. This piece covers size, quiet zone and material to avoid the common scannability traps.
· Zhou Tong
How much text a QR code can hold
The capacity ceiling follows from the encoding mode together with the error correction level. Using Chinese text and links as the two common cases, this piece shows how to estimate it and what to trade off near the limit.
· Chen Mo
How dynamic QR codes relate to short links
The redirect that happens after the scan is where dynamic QR codes and short links genuinely meet. This piece separates the two layers of addressing and shows when a dynamic code helps and when a static one is simpler.
· Lin Lan
Put what you read to use
Sign up to generate and manage QR codes: a dynamic code can change its destination at any time and report scans, while a static code carries its content in the pattern and lasts indefinitely.