all tools—jwt parser
$ jwt --decode

jwt parser.

Decode and inspect JSON Web Tokens. View header, payload, and validate expiration.

input token
decoded token
Paste a JWT and click parse to inspect its contents.
JSON Web Token (JWT) is a compact, URL-safe token format used for authentication. It consists of three parts: header, payload, and signature, separated by dots.
The tool decodes the header and payload (which are Base64-encoded JSON). The signature is displayed but cannot be verified without the secret key.
No, everything runs client-side in your browser. The token never leaves your computer.
→ JSON Formatter
format & validate JSON
→ Base64 Encoder
encode & decode base64
→ UUID Generator
generate unique IDs

learn more in our detailed guide.

→ read the guide