Generating a free QR code is only the first step. Fine-tuning the technical parameters keeps your code scannable in every situation.
1. Start with the right content type
Decide whether you need a URL, Wi-Fi login, business card or form.
2. Balance colours and contrast
A minimum contrast ratio of 7:1 keeps your QR code readable.
3. Choose the correct size
Scanning distance (cm) / 10 = minimum QR code width.
4. Add performance tracking
Attach UTM parameters to your URLs and monitor scans in Google Search Console.