Web
JWT Parser
Decode and verify JSON Web Tokens (JWT) instantly. All processing is done in your browser for maximum security and privacy.
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This parser decodes tokens instantly and checks expiry, entirely in your browser.
JWT Parser
Live
Status
Live
Website
https://ohtoolbox.com/jwt-parserOfficial Description
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This parser decodes tokens instantly and checks expiry, entirely in your browser.
Key Features
100% Client-Side
Instant Decode
Detailed View
Frequently Asked Questions
Yes, when using this tool. All processing is done 100% in your browser. Your tokens are never sent to any server. However, be cautious with other online tools that may send your tokens to their servers.
A JWT is expired when the current time exceeds the "exp" (expiration) claim in the payload. This tool shows you if a token is expired, active, or not yet valid based on these time claims.
You can modify the payload, but the signature will no longer be valid unless you have the signing key. This is the security mechanism of JWTs — any modification invalidates the signature.
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