■ Error Correction Level (ECC)
Defines the level of redundancy built into the QR symbol. Higher levels allow the QR code to remain scannable even if partially damaged, dirty, or covered.
| LEVEL |
RECOVERY |
GRID DENSITY |
BEST FOR |
| L (Low) |
~ 7% |
Minimal |
Clean digital displays, simple links |
| M (Medium) |
~ 15% |
Standard |
General use, default setting |
| Q (Quartile) |
~ 25% |
High |
Product labels, rough handling |
| H (High) |
~ 30% |
Maximum |
Physical prints, outdoor signage |
■ Grid Resolution (PX)
Specifies the output pixel dimensions of the generated PNG file (width & height).
- 512 PX: Light file footprint. Ideal for emails, web layouts, and quick scans.
- 1024 PX: Balanced resolution. Suitable for flyers, presentations, and standard print.
- 2048 PX: Ultra-sharp resolution. Designed for large posters, signs, and professional print materials.
- SVG (Vector): Always available as a separate option. Vector files are mathematically computed and infinitely scalable without any resolution limit.
Thank you for considering supporting ZeroQR! Your contribution helps keep this project alive, maintained, and free for everyone. It means a lot.
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