JWT Decoder

Decode JWT (JSON Web Token) to view header, payload, and signature. All processing is done in your browser — no data is sent to any server.

JWT Token Input

Paste your JWT token in the input field.
The header, payload, and signature are automatically decoded in real-time.
Expiration (exp) and issued-at (iat) timestamps are automatically converted to readable dates.
Use the "Copy" buttons to copy decoded sections to clipboard.