JWT Decoder
Decode JSON Web Tokens (JWT) to view header and payload data.
On-Device
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About JWT Decoder
JWT Decoder is a secure utility for inspecting JSON Web Tokens. It decodes the Base64-encoded header, payload, and signature components, presenting them in a readable JSON format without sending your data anywhere.
How to use JWT Decoder
- Paste your JWT string into the input field.
- The tool automatically splits and decodes the three parts.
- View the decoded JSON header and payload with syntax highlighting.
- Note: This tool decodes for inspection; it does not verify signatures.
Use cases for JWT Decoder
- Debugging authentication issues.
- Inspecting user claims and expiration times.
- Learning about JWT structure.