🔗 bech32-label Demo

Convert 32-byte public keys ↔ DNS-safe bech32 labels for per-identity subdomains

Hex → Label Converter

64-character hex input (32 bytes):

Length: 0/64 ❌ Invalid

52-character bech32 label output:

Length: 0/52

Label → Hex Converter

52-character bech32 label input:

Length: 0/52 ❌ Invalid

64-character hex output:

Length: 0/64

Example Values

Click to load example values:

Perfect for DNS subdomains: user-id.yourapp.com

Usage Example: const userSubdomain = `https://${label}.myapp.com`; // → Complete origin isolation per user // → Prevents cross-tenant XSS/CSRF attacks // → 52 chars fits DNS label limit (63 max)

Why bech32-label?

64-char hex exceeds DNS label limit (63 chars)
npub encodings have HRP/checksum for display, not normative IDs
52-char labels fit perfectly in DNS with room to spare
Zero dependencies, deterministic, canonical