Q: Is my data secure?
Yes. All processing happens entirely in your browser. No data is ever sent to any server.
Q: What error correction levels are available?
Four levels are available: L (Low, ~7% recovery), M (Medium, ~15%), Q (Quartile, ~25%), and H (High, ~30%). Higher levels make the QR code more resilient to damage but increase its density.
Q: Can I customize QR code colors?
Currently the tool generates standard black-and-white QR codes, which provide the best scanning reliability across all devices and lighting conditions.
Q: What size should I choose?
128px is suitable for digital use (websites, apps), 256px is a balanced default for most purposes, and 512px is recommended for print materials where the QR code needs to be scanned from a distance.
Q: How much data can a QR code store?
A QR code can store up to approximately 4,296 alphanumeric characters or 7,089 numeric characters. For URLs, keeping them under 300 characters ensures reliable scanning on all devices.