JSON Web Token parser, encoder and decoder with claims analysis and validation
JWT (JSON Web Token) is a compact, URL-safe means of representing claims between two parties. Parse, encode and decode JWTs instantly.
Parse JWT
Create JWT
Quick Actions
JWT (JSON Web Token) Encoder & Decoder is a fast, privacy-focused online tool to help developers:
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Decode JWTs into readable header and payload sections
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Verify token signatures using your secret key (HMAC)
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Instantly generate new JWT tokens from JSON input
Whether you're debugging authentication flows, testing API tokens, or learning how JWT works — this tool provides a simple and secure way to analyze tokens in your browser. No data is sent to any server.
Signature verification is performed client-side. Your secrets never leave your browser.
Supports both manual input and sample token generation. Great for developers working with OAuth2, OpenID Connect, Firebase, Auth0, and more.
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