JWT Decoder Online

How to use JWT Decoder

• Paste a standard JWT string (starting with 'eyJ...') into the left input area.
• The token is automatically split into Header, Payload, and Signature sections.
• Timestamp claims like 'exp', 'iat', and 'nbf' are automatically converted to human-readable ISO dates.
• Click 'Copy' on any section to copy the decoded JSON to your clipboard.

Edge Cases & Limitations

• Only standard 3-part JWTs (header.payload.signature) are supported.
• Encrypted JWTs (JWE) cannot be decoded without the encryption key.
• The signature is displayed raw — this tool does not verify signatures.

Keyboard Shortcuts

• Ctrl/Cmd + K — Open Command Palette to switch tools instantly.