Why error correction matters
QR error correction can restore a limited amount of damaged or hidden information. A higher level improves tolerance but also increases the number of modules, so it does not make unlimited logo coverage safe.
Keep critical patterns clear
Never cover the three large finder squares, the smaller alignment patterns or the quiet zone. A centered logo with a simple outline is generally safer than a large transparent mark spread across the pattern.
Validate the exported design
EasyQR Kit decodes the generated QR in the browser before enabling export. After download, also test the PNG or printed SVG with several cameras, at realistic angles and under the lighting where it will be used.
If scanning is inconsistent, reduce the logo, restore darker modules, simplify the content or increase the overall print size.
Logo safety decisions
| Element | Safer choice | Higher-risk choice |
|---|---|---|
| Error correction | Use a high level and still test | Assume correction makes any logo safe |
| Placement | Small, centered logo | Cover finder or alignment patterns |
| Logo background | Simple solid background | Large transparent artwork over modules |
| Validation | Test the exported file and print | Rely only on the editor preview |
Pre-production checklist
- Use high error correction for a logo design
- Keep finder patterns and quiet zone unobstructed
- Use a simple centered logo with a clear background
- Test the downloaded file and a physical print
Frequently asked questions
Does error correction guarantee any logo will work?
No. It provides limited recovery capacity; excessive coverage or low contrast can still make a QR code unreadable.
Why does the preview scan but the print does not?
Printing can introduce blur, low contrast, reflection, scaling or an insufficient quiet zone that was not present on screen.