JWT Decoder
FeaturedQuickly decode and inspect any JSON Web Token (JWT). View headers and claims instantly without sending data to any server.
{
"alg": "HS256",
"typ": "JWT"
}{
"sub": "123",
"name": "John Doe",
"iat": 1516239022
}About the JWT Decoder
The JWT Decoder is a debugging tool for inspecting JSON Web Tokens. It breaks down the header, payload, and signature components into human-readable JSON, allowing developers to verify claims and expiration dates instantly.
How to use the JWT Decoder
- 1Paste your encoded JWT into the input field.
- 2Review the decoded Header and Payload sections.
- 3Check the 'Issued At' and 'Expires At' timestamps in the summary.
- 4Verify the signature block is present.
Why people use it
- Debug authentication issues in web applications.
- Verify that an identity provider is sending the correct claims.
- Check token expiration times during development.
- Inspect the structure of third-party integration tokens.
Frequently asked questions
Does this tool verify the JWT signature?
No. This tool is for decoding and inspection only. Signature verification requires your server's secret key and should always be done server-side.
Is it safe to paste my JWT here?
Processed locally in your browser. Your token is decoded on your device without requiring an upload to our servers.
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