How to Customize QR Code Styles in CrabQR

1. Open QR Code Designer
2. Select Color Options
3. Choose Corner Styles
4. Adjust Error Correction Level
5. Save as Template

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Open QR Code Designer

When creating a new QR code or editing an existing one, look for the Style section in the form. Click on Customize Style or select Create New Style from the style dropdown menu. This opens the QR Code Style Designer where you can control every visual aspect of your QR code.

Select Color Options

The Style Designer displays four color pickers: Foreground Color (the main QR code dots), Background Color (the area behind the code), Eye Outer Color (the corner square frames), and Eye Inner Color (the dots inside corners). Click each color picker to choose colors that match your brand. For best scanning reliability, ensure high contrast between foreground and background colors.

Choose Corner Styles

Scroll down to the Corner Style section. Here you can choose from four different styles: Square (classic, sharp edges), Rounded (smooth corners), Extra-Rounded (very smooth, modern look), or Dot (circular dots instead of squares). The preview updates in real-time as you select different options, helping you see which style fits your design aesthetic.

Adjust Error Correction Level

Find the Error Correction dropdown in the style settings. Choose from four levels: L (Low - 7%), M (Medium - 15%), Q (Quartile - 25%), or H (High - 30%). Higher error correction allows your QR code to still scan even if partially damaged or obscured, but creates a denser QR code. Medium (M) is recommended for most uses, while High (H) is best if you're adding a logo.

Save as Template

Once you've perfected your style, check the Save as Template box at the bottom of the designer. Give your style a memorable name like "Brand Colors" or "Event Style". Click Save to add this style to your template library. You can now quickly apply this style to any future QR codes without recreating all the settings. You can also set it as your default style for new QR codes.

Tips and Best Practices

• Always maintain high contrast between foreground and background colors - aim for dark on light or light on dark.
• Test your customized QR codes with multiple smartphone cameras to ensure they scan reliably across different devices.
• Use your brand colors to create QR codes that match your marketing materials and strengthen brand recognition.
• If adding a logo later, set error correction to High (H) to maintain scannability with the logo overlay.

Common Pitfalls to Avoid

• Don't use colors that are too similar for foreground and background - low contrast makes QR codes difficult to scan.
• Avoid using very light colors for the foreground on white backgrounds, or very dark colors on black backgrounds.
• Don't use Low (L) error correction if you plan to add a logo - it may prevent successful scanning.
• Remember that some older QR code scanners work best with traditional black on white codes.

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