JWT Debugger

Decode JWT tokens and analyze header, payload, claims, and expiration without sending your secret key.

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About this tool

Type
Text
Category
Developer
Last updated
10 Mar 2026

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About JWT Debugger

The JWT Debugger decodes JSON Web Tokens and displays the header, payload, and claims in a readable format. Instantly check token expiry, issuer, subject, and all custom claims. Note: this tool decodes only — it does not verify the signature.

How to use JWT Debugger

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Navigate to JWT Debugger on Xuvero — no registration required.

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<iframe src="https://xuvero.com/en/tools/jwt-debugger/embed" width="100%" height="480" style="border:none;border-radius:12px;" loading="lazy" title="JWT Debugger"></iframe>

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Frequently Asked Questions

A JSON Web Token (JWT) is a compact, URL-safe token format used for authentication. It consists of three parts: header, payload, and signature.
The decoding happens entirely in your browser — the token is never sent to any server. However, avoid sharing JWTs publicly.
The tool decodes and displays the header and payload. For full signature verification, you would need to provide the signing secret or public key.
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