1. Detect USB Devices
Option A: Click Detect USB to scan for connected USB devices using WebUSB (requires Chrome/Edge browser)
Option B: Click Load Demo Device to see how comprehensive device details are displayed
Option C: Use Add Manual Device to enter device information manually
2. Select a Device
Click on any detected device in the list to select it. You'll see comprehensive technical details including:
- Serial Number
- VID:PID (Vendor:Product ID)
- Manufacturer & Product Name
- USB Version & Device Version
- Device Class (Mass Storage, HID, etc.)
- Max Packet Size
3. Customize Serial Number
Click the edit button next to the serial number to enter a custom value if needed.
4. Generate QR Code Label
The app automatically generates a QR code label preview. You can:
- Choose between two label sizes: 2.25" x 1" or 40mm x 30mm
- Toggle to show/hide the title above the QR code
- Toggle to show/hide the serial number text below the QR code
- Add custom text to replace the device name
5. Download or Print
Once you're happy with the preview:
- Save PDF - Download as a PDF file for printing
- Save Image - Download as a PNG image
- Print Label - Send directly to your system printer
Tips
- For best results with WebUSB, use Chrome or Edge browsers
- Physical USB devices may show more detailed specifications than WebUSB devices
- QR codes can be scanned by any QR code reader to reveal the serial number
- Labels are optimized for small format printers and label makers