Support & FAQ
Quick answers and tips for getting clean, scannable results.
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Does QR Pro work offline?
Yes. All generation and saving happen on device. There are no accounts, servers, or analytics.
Which error‑correction level should I use (L/M/Q/H)?
M (15%) is a great default. Use H (30%) if you add a small center logo or expect some wear/occlusion. L (7%) maximizes capacity; Q (25%) sits between M and H.
What is the quiet zone?
The light padding around the code. The classic recommendation is 4 modules. Increase it if the code is printed small or sits on a noisy background.
Any color tips?
Keep the dots darker than the background (e.g., black dots on white). High contrast improves scanning on all devices.
How do I add a logo/photo?
Choose a center shape, tap Pick Photo, then pinch to zoom and drag to position. Avoid covering the corner finder patterns.