🏷️ NFC URL Creator

Create and test NFC-compatible URLs with embedded messages

Your Message

URL size: 0 bytes

Generated URL

Enter a message above to generate a URL

NFC Tag Compatibility

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This tool supports multiple URL formats for maximum flexibility and backward compatibility:

📋 Supported URL Formats

https://ghsj.me/u?b=<base64> - Base64-encoded message (most compact)
https://ghsj.me/u?u=<url-encoded> - URL-encoded plaintext (easy to create manually)
https://ghsj.me/u?t=<base64> - Legacy base64 format (backward compatible)
https://ghsj.me/u?text=<url-encoded> - Very old legacy format

✍️ Creating URLs Manually

Easiest method: Use the u parameter with URL-encoded text:

Replace spaces with %20 or +
Encode special characters (e.g., ! → %21, ? → %3F)
Example: https://ghsj.me/u?u=Hello%20World%21

Most compact: Use the tool above to generate base64-encoded URLs automatically for NFC tags.

🔄 Backward Compatibility

All existing NFC tags and URLs will continue to work. The page checks all parameter formats in order of preference.