How the QR Code Generator Works
A QR (Quick Response) code stores text — a URL, a message, contact details, anything — as a grid of black and white squares that any phone camera can scan and decode instantly. Type or paste your text above and a QR code renders immediately in your browser, ready to download as a PNG and use anywhere: printed on packaging, posters, business cards, or shared digitally.
The generator automatically picks the smallest QR code size (called the "version") that fits your text, and adds error-correction data so the code still scans correctly even if part of it is smudged, scratched, or partially covered by a logo. Longer text needs a larger, more detailed code — this tool supports up to roughly 210 characters, comfortably enough for URLs, short messages, or contact snippets.
Everything happens locally in your browser using plain JavaScript — your text is never uploaded to a server to generate the code, so it's safe to use for links you'd rather not share with a third party. Once generated, right-click the code to save it directly, or use the Download PNG button for a clean file.
Frequently Asked Questions
Will this QR code work forever, or does it expire?
It never expires. The text you enter is encoded directly into the pattern of the QR code itself — there's no external service or redirect involved, so it will keep working for as long as the underlying URL or content stays valid.
Why does the QR code look different for longer text?
QR codes come in fixed "versions" with increasing grid sizes. Longer input text needs more data cells to store, so the generator automatically steps up to a larger, denser grid as your text gets longer. Shorter text (like a short URL) produces a simpler, easier-to-scan code.
Can I put a logo in the middle of the QR code?
Not with this tool directly, but QR codes include built-in error correction specifically so a small logo or watermark placed over the center can be added afterward in an image editor without breaking the scan — as long as it doesn't cover too much of the code.