JWT Decoder & Inspector
Decode and inspect JSON Web Tokens (JWT) to view header, payload, and signature.
Part of Yoopla's 445+ free browser tools.
How to Use JWT Decoder
- 1
Paste your JWT token into the input field.
- 2
The tool automatically decodes and displays the header and payload.
- 3
Review the token claims, expiration, and signature algorithm.
- 4
Copy individual sections or verify token structure.
Frequently Asked Questions
What is a JWT?▾
A JSON Web Token (JWT) is a compact, URL-safe token format used for securely transmitting information between parties as a JSON object.
Does this tool validate JWT signatures?▾
This tool decodes and displays JWT content. For signature validation, you need the secret key or public key on a server.
Is my JWT token secure here?▾
Yes — all decoding happens in your browser. No data is sent to any server.
Can I decode expired tokens?▾
Yes — the tool decodes any valid JWT structure regardless of expiration status.
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