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A QR code is a scannable square barcode that encodes text — most often a URL, but also Wi-Fi credentials, contact details, or any short string. Point a phone camera at it and it opens instantly.
This generator creates a QR code from your text in the browser and lets you download it as an image. Nothing is uploaded, so it's fine for private links.
Put a scannable link on a poster, business card, or product.
Encode network credentials so guests can join by scanning.
Point people to a menu, ticket, or signup page with a scan.
No — the code itself is static and encodes your text forever. If it points to a URL, only the destination page can change or go away.
Up to a few thousand characters, but the more you encode the denser (harder to scan) it gets. Short URLs scan most reliably.
No. The QR code is generated entirely in your browser.
Bigger is more reliable. As a rule of thumb, keep the printed code at least 2×2 cm, larger for scanning from a distance.