Free QR code generator.

Yes. There’s no sign-up, no watermark and no limit on downloads. The code is drawn in your browser, so what you type isn’t sent to us unless you choose to shorten the link first.

No. A QR code is just your text or link drawn as squares, so it never expires on its own. It keeps working as long as the link inside it works, and zou.sh links never expire.

Use SVG for print and design tools: it stays sharp at any size. Use PNG for places that only accept images, such as some social networks and slide tools, and pick a size at least as large as the final print.

A shorter link needs fewer squares, so each square is bigger at the same print size and easier to scan. A zou.sh link also counts each scan as a click, visible on its + preview page.

M (about 15% recovery) suits most uses. Choose Q or H if the code may get scratched or dirty, or if you plan to place a small logo over it. Higher levels make the code denser.

Yes, but keep a dark code on a light background with strong contrast. Many phone cameras fail on inverted (light on dark) or low-contrast codes, so the tool warns you when contrast is too low.