JWT Decoder

Decode and inspect JSON Web Tokens (JWT) with real-time validation

Algorithm
Issued At
Expires At
Not Before

About JWT: JSON Web Tokens are an open, industry standard (RFC 7519) method for representing claims securely between two parties. This tool decodes and displays the contents without signature verification.

Security Note: This decoder runs entirely in your browser. No tokens are sent to any server. However, avoid pasting production tokens containing sensitive data.