How to Create Useful QR Codes
Create QR codes for links, text, contacts, and WiFi while keeping payloads accurate and scannable.
Choose the right payload
A QR code stores text, not an action. It can contain a web address, contact details, Wi-Fi credentials, or a short message. Use the shortest complete value you can: dense codes have smaller modules and are harder for distant or older cameras to read.
Design for reliable scanning
Keep strong dark-on-light contrast and the empty quiet zone around every edge. Avoid stretching, cropping, or placing graphics over functional squares. Test the final printed size and material, not only the source image on a bright monitor.
Publish safely
Use HTTPS links, verify every character, and avoid embedding secrets. A printed code cannot be edited, so use a stable URL that you control when the destination may change. Scan with several devices before distributing a large batch.