QR Code Generator with Logo – Create Branded QR Codes | ZechKit

QR codes feature mathematical Reed-Solomon Error Correction standardized under ISO/IEC 18004:2015. When Error Correction is set to Level H (High), up to 30% of the entire QR matrix can be covered or damaged without losing the encoded information. Our engine safely embeds your logo into the central region while preserving the vital corner finder eyes and alignment patterns.

• Safe Logo Size (18% – 22%): Keep your logo around 20% of the QR width. Exceeding 28% can obscure alignment patterns.
• High Contrast (4.5:1 Minimum): Always use a dark foreground on a white or light background. Avoid low-contrast color combinations.
• Adequate Quiet Zone Margin: Maintain at least 2 to 3 modules of blank margin around the QR code so smartphone cameras can distinguish the code from background artwork.
• Vector SVG for Printing: Always export in vector SVG format for large banners, signs, product packaging, and trade show displays to prevent pixelation.

Our tool includes a local computer vision engine powered by @zxing/library that decodes the generated canvas in memory to verify that phone cameras will be able to read it before you print or distribute it.