QR Code Generator

How it works

A QR code stores data in a grid of black and white modules, read by phone cameras from almost any angle. This generator encodes your text with a compact open-source QR library (qrcode-generator by Kazuhiko Arase, MIT license) that is bundled with the tool, so it runs entirely in your browser with no uploads and no external requests. The encoder picks the smallest QR version that fits your content, applies Reed-Solomon error correction at level M (recovering up to roughly 15 percent of a damaged code), and masks the pattern for reliable scanning. Shorter content makes a simpler grid that scans from farther away and at smaller sizes, which is why short URLs outperform long paragraphs. The downloadable PNG includes the standard quiet zone, the blank border scanners need to locate the code, so do not crop it when placing the image in a design. For print, keep the code at least about 2 cm wide, maintain strong contrast (dark modules on a light background), and always test-scan the final printed piece before distributing it.