JWT Decoder

Decode and inspect JSON Web Tokens (JWT) to view their header, payload, and signature components. Useful for debugging authentication issues and understanding token structure.

Features:

• Decode JWT header and payload
• Check token expiration status
• View signature (without verification)
• Copy individual parts to clipboard
• Pretty-printed JSON output
• Example token for testing

Common JWT Claims:

• iss - Issuer of the token
• sub - Subject (user ID)
• aud - Audience
• exp - Expiration time
• iat - Issued at time
• nbf - Not before time