JWT Decoder
Decode and inspect JWT header and payload without verifying signatures.
Overview
About the JWT Decoder
Paste a JSON Web Token to instantly decode its header and payload. View claims, roles, issuer and expiry without sending the token to any server — ideal for debugging authentication flows.
Benefits
How it works
- 1Paste your JWT into the input field.
- 2The header and payload are decoded and displayed as formatted JSON.
- 3Standard claims such as exp, iat, iss and sub are easy to read.
- 4Copy individual sections or the full decoded output as needed.
Applications
Use cases
- Debug OAuth and OpenID Connect token payloads during integration.
- Verify expiry and audience claims before API calls fail.
- Inspect roles and permissions embedded in access tokens.
- Learn JWT structure when building auth systems.
Support
Frequently asked questions
Does this verify the JWT signature?
Is it safe to paste production tokens?
Why does decoding fail?
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