Method
Base64URL-decodes and parses the first two token segments.
Utilities / browser tool
JWT Decoder
Decode a JWT header and payload locally without verification.
Inspect readable token segments while keeping the token in your browser.
Your inputs stay on your device
Decode a JWT
live resultDecoded JWTs are not verified. Never treat a decoded payload as trusted or share sensitive tokens.
Context & Reference
How it works
For inspecting a JWT header and payload without uploading it.
parser guideHow to use it
Use this parser with your own values, then review the clearly labelled result and copy it when you need it elsewhere.
Understand the result
Readable JSON is shown for header and payload.
Example
Paste a three-part JWT to inspect its claims.
Practical tip
Decoding is not verification and claims are not trusted.
Notes
This parser runs locally in this browser. Decoding is not verification and claims are not trusted.
Helpful answers
Frequently Asked Questions
A few useful details beyond the guide above.
No. The tool only decodes the header and payload locally. A readable payload does not prove that the token is authentic, current, or safe to trust.
Useful next steps
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