QR codes connect the physical world to the digital one: a menu on a table, a poster in a window, a business card, a product label. Creating one takes a minute — but a few details make the difference between a code that scans instantly and one that frustrates people.
Static vs. dynamic QR codes
- A static QR code stores your content — a URL, text or Wi-Fi details — directly in the pattern. It works forever and needs no service behind it. You can't change the content after printing.
- A dynamic QR code stores a short redirect link owned by a QR service. You can change the destination later, and the service can count scans — but if the service shuts down or you stop paying, the code may stop working.
RIZONI TOOLS creates static codes: free, private and permanent.
How to create a QR code
- Open the QR Code Generator.
- Choose a type: Link, Text, E-mail, Phone, SMS or Wi-Fi.
- Enter the details — the preview updates instantly.
- Adjust size, colors, margin and error correction if you like.
- Download PNG for screens and documents or SVG for professional printing.
A Wi-Fi code lets guests join your network by scanning — no typing long passwords. Enter the network name (SSID), choose the security type (usually WPA/WPA2/WPA3) and the password. Most modern phone cameras recognize these codes automatically.
Making QR codes scan reliably
Contrast
Use a dark code on a light background. Light-on-dark or low-contrast color combinations fail on some scanners.
Quiet zone
Keep the empty margin around the code. Text or graphics too close to the edge confuse scanners.
Size and distance
A common guideline is that the code should be about one-tenth of the scanning distance: a code scanned from 1 meter should be roughly 10 cm wide.
Keep content short
The more data, the denser the pattern. Use short URLs where possible — a dense code needs to be printed larger.
Error correction
QR codes include redundancy so they still scan when partly damaged:
| Level | Can recover |
|---|---|
| L | ~7% |
| M | ~15% (good default) |
| Q | ~25% |
| H | ~30% |
Higher levels are more robust but make the code denser.
Always test before printing
Scan the downloaded code with at least two different phones, from the distance people will actually use, before you print hundreds of copies.
Conclusion
Choose the right type, keep the content short, use strong contrast and test it. With a static code from the QR Code Generator you'll never have to worry about it expiring.