Developer
QR Code Generator
Turn any URL or text into a scannable QR code.
🔒 Runs entirely in your browser — nothing here is ever uploaded
CalcoTools · QR Code Generator · generated 8/23/2026, 12:23:29 PM
About the QR Code Generator
Turns any text or URL into a scannable QR code image, with adjustable size and error-correction level, rendered entirely in your browser.
How to use it
- Enter the URL or text to encode.
- Choose a Size and Error correction level.
- Download the generated PNG.
Formula
QR codes follow the standard QR encoding specification (ISO/IEC 18004), which converts input text into a grid of black-and-white modules a camera can decode.
Worked example
Entering a website URL produces a code that opens that URL directly when scanned by a phone's camera or a QR scanning app.
Recommendations
- • Test the code with your own phone before sharing or printing it widely.
- • Higher error correction is worth it for anything printed or displayed physically, since it can get scuffed or partly covered.
- • Keep the encoded text short when possible — shorter input makes a visually simpler, easier-to-scan code.
Frequently asked questions
Higher error correction adds redundancy, so the code still scans even if it's partly damaged or obscured — at the cost of a visually denser code.