About the QR Code Generator
Turn a URL or any short text into a static QR code. The preview updates as you type and the finished code can be downloaded as a PNG for screens or an SVG for print. Everything is generated locally in your browser.
How long does a QR code last?
A QR code created here does not expire. It contains the entered text itself, rather than a DUN DAT-managed redirect. Once downloaded, it keeps working independently of this site. If the code contains a web address, however, it only remains useful while that address continues to work and still leads to the intended page.
Physical durability is separate. A printed code must retain enough contrast, sharp edges and clear space around it. Sunlight, scratches, folds, very small printing or a damaged surface can eventually make any QR code difficult to scan.
PNG or SVG?
SVG is the safest choice for signs, labels and professional print because it can be scaled without becoming blurry. PNG is convenient for websites, presentations and documents. Use a larger PNG when the code will appear large, and never crop away its white border.
FAQ
Do these QR codes expire?
No. The generated QR code is static and has no expiry date. It stores the text or URL directly. A linked page can still move, expire or stop working, but the QR image itself does not depend on DUN DAT after download.
Is the QR code sent to a server?
No. The code is generated locally in your browser. DUN DAT does not upload, store or track its content.
Should I download PNG or SVG?
Use SVG for professional printing because it stays sharp at any size. PNG works well for screens and documents when exported at a suitable resolution.
How can I keep a printed QR code readable?
Keep the black-on-white contrast and the clear border around the code, avoid stretching or cropping it, and test the final printed size with several phones before producing a large batch.