QR Code Generator Guide
How to generate QR codes for URLs and text in the browser. Covers input formats, export options (PNG and SVG), error correction levels, and design considerations for reliable scanning.
Payload types and exports
QR Code Generator creates static QR codes for URLs, text, Wi-Fi settings and contact cards. PNG size presets are 192, 256, 320 and 384 pixels; SVG is available when scalable output is preferable. The QR payload is fixed in the exported image. Changing a destination requires a new code unless the encoded URL itself points to a redirect you control.
For a URL, enter the full intended address and inspect query parameters before generation. For Wi-Fi, check the network name, authentication choice and password carefully. A shared Wi-Fi QR code exposes the connection information to anyone who scans it. For a contact card, check names and contact fields in the receiving phone's preview before saving.
Limits: contrast, quiet zone and correction
Preserve the blank quiet zone around the code. Do not crop it away to make the image fit a card. Prefer a dark foreground and light background with strong contrast. Larger or more complex payloads create denser symbols; increasing output size can help, but it does not guarantee a scan at a particular physical distance.
Error correction levels L, M, Q and H offer increasing redundancy, usually at the cost of a denser pattern. A higher level is not permission to obscure arbitrary parts of the symbol. Test the final styled or printed code, including any resizing performed by a design editor.
An overly long payload can exceed the selected QR settings and prevent generation. Shorten the text or lower the error-correction level, then scan the regenerated result. The tool produces one static code at a time; it does not update an already printed destination or verify that a URL is safe.
Troubleshooting and next steps before publication
Generate a small example URL such as https://example.com/demo?source=card, download the image, and scan the downloaded or printed result with the intended receiving device. Confirm the exact scheme, host, path and query rather than relying on the preview image alone. Do not scan a code containing real connection or contact details into a shared device.
If the code does not scan, first restore a quiet zone and strong contrast, then try a larger image or simpler payload. If it scans to the wrong destination, correct the payload and regenerate. URL mode requires a full http:// or https:// address; Wi-Fi mode requires a network name and a password unless no-password mode is selected. A successful export does not test the destination server or make a malicious URL safe.
Use URL Parser to inspect a URL without fetching it. Keep editable source information separately from the exported QR image. Generation runs in the browser; see Data handling.