JWT Token Decoder & Inspector
Dev PickDecode and inspect JSON Web Tokens (Header, Payload, and Expiration) safely in your browser.
HEADER: Algorithm & Token Type
PAYLOAD: Data Claims & Expiration
How to Use JWT Token Decoder & Inspector Online
- Paste your encoded JSON Web Token (e.g., Bearer eyJhbGciOi...) into the token field.
- The tool will split the three segments and decode the Base64Url payload.
- Inspect standard claims like "iss", "sub", "iat", and "exp" with human-readable timestamps.
Key Features & Capabilities
- Color-coded token breakdown (Header, Payload, Signature)
- Automatic token expiration calculation and human-readable time remaining
- Prettified JSON representation for both Header and Payload claims
- 100% private: your bearer tokens are never logged or transmitted
Frequently Asked Questions
Yes. FeieSoft operates 100% on the client side in your web browser. No network requests are sent with your token.
This tool is an inspector designed to decode and audit payload claims and token validity dates. To verify cryptographic signatures, you would need your private or HMAC secret key, which we recommend keeping strictly in your local development environment.
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