Contents are stored inside the code
For a link, enter the full URL including https://. Bivonio encodes it directly without adding an intermediate redirect service.
A printed code cannot be edited. If contents change, generate another code unless you separately control a redirect at its destination address.
Contrast, margin and dimensions
The generator uses black on white with a clear surrounding margin. Do not crop that margin or place the code over an image that makes its modules difficult to distinguish.
More content produces a denser pattern. Choose sufficient dimensions and preserve proportions; enlarging a small bitmap afterward may blur edges. SVG is useful for scaling without losing sharpness.
- Paste text or a complete URL and check its spelling.
- Choose dimensions and PNG or SVG format.
- Generate and download the code.
- Scan with another device and verify the displayed contents or destination.
Check the final version too
For print or a poster, test the final specimen at the intended distance and lighting. A generator-screen test does not validate every later print.
The URL may reveal its contents to anyone who scans. QR codes do not encrypt information or guarantee external links are safe; check the destination before opening it.