QR Code
Create QR codes
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Frequently Asked Questions
What is a QR code?
QR (Quick Response) code is a 2D barcode that stores data like URLs, text, or contact info. It can be scanned by smartphone cameras for quick access to information.
How much data can a QR code store?
QR codes can store up to 3KB of data: ~7,000 numeric characters, ~4,000 alphanumeric, or ~2,900 bytes. Higher data = denser code = harder to scan.
What is error correction in QR codes?
Error correction allows QR codes to be read even if partially damaged. Levels: L (7%), M (15%), Q (25%), H (30%). Higher levels allow more damage but reduce capacity.