Decode JSON Web Tokens (JWT) and view payload information
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Enter a token to see the decoded content.
Parse JWT strings instantly as you paste them, showing Header, Payload, and verification status.
Your JWT credentials never touch any external server. Complete privacy for API authorization keys.
Pretty-prints Header and Payload JSON structures with standard indentation and syntax highlighting.
Everything runs inside your web browser. We never upload your text, files, or personal data to any servers.
No sign-ups, no subscriptions, and no usage limits. Get your results instantly in a single click.
This decoder extracts and formats the header and payload data. Signature verification would require your private signing keys, which we do not collect to protect your security.
No. The parsing is done locally in your browser using JavaScript. No tokens are sent over the network or saved.
Yes, the tool decodes and displays claims for expired tokens, and it will highlight that the token is past its expiration date.
JWTs consist of three parts separated by dots: Header (red), Payload (purple), and Signature (blue). The split helps developers visualize the token's structure.
No. This tool is designed to decode JSON Web Signatures (JWS). Decrypting encrypted JSON Web Encryption (JWE) tokens requires keys that are not requested for security.
Yes, completely. All calculations and file conversions happen entirely inside your own browser. We do not store, view, or upload any of your input data to our servers.
No. UtilsGo is 100% free. You don't need to create an account, register, or pay for any features.
"Debugging JWTs has never been easier. Works perfectly for API testing."
Ryan Chen
✓ Verified"Clear payload display. Saved me hours of manual decoding."
Hannah White
✓ VerifiedThousands of users trust UtilsGo daily
Built by UtilsGo • Last updated May 2026 • No ads • No tracking