Six checks before you print a QR code

1. Open the address yourself

Verify the complete address, including https://, and test while signed out or on another device. A private shared document or staff-only page may be inaccessible even when the code scans perfectly. Never publish a one-time secret link, such as a password-reset token, on a public handout.

2. Identify what may change later

A static QR encodes its content into the image; this site cannot edit it after printing. If details may change, consider linking to a stable page you control and updating that page. An external URL shortener adds dependence on another service and its redirects.

3. Keep the payload purposeful

Long content can create a denser pattern. The generator accepts up to 2,000 UTF-8 bytes, but filling the capacity is not a print-quality target. If simplifying a URL, first determine which parameters are needed for access rather than deleting them indiscriminately.

4. Preserve the quiet zone and square shape

DENSO WAVE describes a four-module clear border around a standard QR symbol. The generated PNG includes this space. Do not crop it away, stretch width and height independently or add effects over the pattern.

Repeated resizing and heavy shrinking can blur the little squares. Use the original PNG and inspect the pattern at the final layout size.

5. Test a physical sample at the real distance

A successful scan from a monitor is not a print test. Use the final paper and size, and check expected lighting and reflective surfaces. If scanning works only when a phone is held unusually close, enlarge the layout or simplify the input, then print and test again.

6. Explain the destination beside the code

A label such as “View the event schedule” gives the code a clear purpose. A short human-readable address can provide an alternative route for people who cannot scan it. Keep the destination available after distribution; this generator does not monitor link uptime or count scans.