QR Code Size Guide: How Big Should Your QR Code Be?
QR code minimum size depends on scan distance and pixel density. Learn the recommended sizes for print, screens, and packaging to ensure reliable scanning.
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Tags: qr-code, design, developer-tools
QR Code Size Guide: How Big Should Your QR Code Be? The most common reason a QR code fails in the field isn't encoding errors or bad data — it's size. The code was printed too small, and the camera can't resolve the individual modules clearly enough to decode them. There's a direct relationship between physical size, scanning distance, and module density (which is determined by how much data you're encoding and which error correction level you chose). This guide gives you the numbers you need to size your QR code correctly for every use case. --- The Core Rule: Size vs. Scanning Distance The fundamental rule is that scanning distance should be no more than 10× the width of the QR code. A QR code that is 3 cm wide can be scanned reliably from up to 30 cm (about arm's length). A 10 cm code…
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