Security
QR Code Generator / Decoder
🔒 Runs entirely in your browser. Nothing is sent anywhere.
Generate QR codes from any text or URL. Or upload an image to decode an existing QR code.
19 characters
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How it works
QR codes store data as a grid of black and white modules. Three finder patterns in the corners let scanners locate and orient the code. Reed-Solomon error correction means codes remain readable even if part of the image is damaged.
Higher error correction (Q or H) makes the QR more resilient — useful if you plan to add a logo or print it on uneven surfaces — at the cost of denser modules.
Both generation and decoding happen in your browser using pure JavaScript libraries. No image, text, or URL ever leaves your device.
Runs entirely in your browser. Nothing is sent anywhere.