JWT Decoder
Secure online JWT decoder to parse token header and payload in your browser
// Header// PayloadJWT Decoder
This online JWT decoder helps developers parse JSON Web Token directly inside your browser.
How to use
- Paste your complete JWT token into the input box.
- The tool automatically decodes the token content.
- Switch between JSON view and Claims Breakdown table to check data.
- Timestamps such as iat, exp and nbf will be converted to readable local time.
Security features
All decoding logic runs locally on your device. Your JWT data will not be sent to any remote server, preventing sensitive credential leakage.
Supported content
- Decode JWT header information including signing algorithm and token type
- Parse payload claims including custom fields and standard time fields
- Two display modes: formatted JSON and structured claims table
Common use scenarios
- Debug authentication token during backend and frontend development
- Verify token expiration time and custom claim values
- Check signing algorithm configuration inside JWT header
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