QR Code

Generate, decode, and beautify QR codes with customizable colors, logos, and formats. Works across all OpenClaw channels including WhatsApp.

QR Code Skill

⚠️ This skill requires the companion plugin to function!

🚀 Quick Start

💎 Recommended: Full Feature Installation

For the complete experience with rounded dots, gradient colors, logo integration, and natural language support, install from GitHub:

bash

curl -s https://raw.githubusercontent.com/zouyawen/openclaw-qrcode/main/install.sh | bash
openclaw gateway restart

⚡ Basic Installation (from ClawHub)

This provides basic QR code functionality only:

bash

mkdir -p ~/.openclaw/skills/qr-code
# Extract the downloaded skill.zip to this directory
openclaw gateway restart

💡 Pro Tip: The GitHub installation includes advanced features like rounded dots, color gradients, and logo embedding that aren't available through ClawHub alone!

Features

• Generate: Create QR codes with custom colors, background, size, logo overlay, and format (PNG, JPG, SVG)
• Decode: Extract data from QR code images
• Beautify: Enhance existing QR codes with new styling while preserving data
• Natural Language: Just say "make a colorful QR code" or "add a logo to this QR code"
• Cross-channel compatibility: Works seamlessly across all OpenClaw channels including WhatsApp, Telegram, Discord, etc.
• Automatic format handling: Converts formats as needed for channel compatibility
• Enhanced security: Path traversal protection, input validation, and secure error handling
• WhatsApp optimization: Automatic SVG-to-PNG conversion for WhatsApp compatibility

Security Features

• Path traversal protection: Logo paths are validated to prevent directory traversal attacks
• Input sanitization: All color, size, and format parameters are strictly validated
• Secure error handling: Comprehensive try-catch blocks prevent information leakage
• File access restrictions: Only allows access to files within the workspace directory

Usage Examples

Natural Language (Recommended)

• "生成一个圆点的渐变色二维码，内容是 https://example.com"
• "在二维码中间加个 logo"
• "用蓝色和黄色做渐变效果"
• "这个二维码图片里是什么内容？" (attach image)

Command Mode (Optional)

text

/qr generate https://mzt315.com color=red backgroundColor=white size=10 format=png
/qr decode [attach QR code image]  
/qr beautify [attach QR code image] color=green backgroundColor=black size=12

With Logo (Secure)

text

/qr generate https://mzt315.com logoPath=logo.png

Note: Logo paths must be relative to the workspace and cannot contain .. or absolute paths.

File Locations

• QR Code Output: ~/clawd/qr-codes/
• Logo Assets: ~/clawd/qr-assets/ (place your logo files here)

WhatsApp Compatibility

• Automatically handles WhatsApp's format requirements (PNG/JPG only)
• Automatic SVG-to-PNG conversion: If SVG is requested on WhatsApp, it's automatically converted to PNG
• Returns MEDIA paths that can be sent directly to any channel
• Optimized for mobile viewing with appropriate sizing

Input Validation

• Colors: Must be valid CSS color names or hex codes (e.g., "red", "#FF0000")
• Background Colors: Same validation as colors
• Size: Must be a number between 1 and 50 (inclusive)
• Format: Must be one of: png, jpg, jpeg, svg
• Logo Path: Must be a relative path within the workspace directory

Installation Requirements

This skill works best with the companion plugin from GitHub:

bash

# Full feature installation (recommended)
curl -s https://raw.githubusercontent.com/zouyawen/openclaw-qrcode/main/install.sh | bash

# Python dependencies (installed automatically by the script)
# qrcode[pil], pillow, numpy, pyzbar

Technical Details

This skill leverages OpenClaw's built-in qr_code_operations tool which supports both Python-based advanced features and Node.js fallback for maximum compatibility across different environments. All operations include comprehensive error handling and security validation.