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JWT Decoder

Decode and analyze JWT tokens online free

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How to Decode JWT Token Online Free

Our free JWT decoder tool allows you to decode and analyze JSON Web Tokens instantly in your browser. Simply paste your JWT token, and view the decoded header, payload, and signature with detailed claim information. Perfect for debugging and development.

Free JWT Decoder for Developers

This JWT decoder tool is specifically designed for developers who need quick and reliable JWT analysis. Decode tokens, check expiration times, analyze claims, and understand token structure without any server-side processing.

JWT Token Analyzer with Claim Details

Analyze JWT tokens with comprehensive claim information. Our tool automatically identifies standard claims (iss, sub, aud, exp, nbf, iat, jti), displays timestamps in readable format, and highlights expired tokens for easy debugging.

Secure Browser-Based JWT Decoder

Decode JWT tokens securely in your browser without sending data to any server. All processing happens client-side, ensuring your tokens remain private. Download decoded sections as JSON files for further analysis.

Frequently Asked Questions

What is JWT?

JWT (JSON Web Token) is an open standard (RFC 7519) for securely transmitting information between parties as a JSON object. It's commonly used for authentication and authorization in web applications.

How to decode JWT token online?

Simply paste your JWT token in the input field, and our tool will automatically decode and display the header, payload, and signature. It's instant, free, and works entirely in your browser.

Is this JWT decoder free?

Yes, our JWT decoder is completely free to use. No registration, no limits, and no hidden costs. Perfect for developers who need quick JWT analysis.

Can this tool verify JWT signatures?

No, signature verification requires the secret key or public key and cannot be performed securely client-side. This tool only decodes and displays JWT information for analysis purposes.

What JWT algorithms are supported?

Our decoder supports all standard JWT algorithms including HS256, HS384, HS512, RS256, RS384, RS512, ES256, ES384, ES512, PS256, PS384, PS512, and none.

Is it safe to decode JWT tokens here?

Yes! All JWT decoding happens entirely in your browser. Your tokens never leave your device, ensuring complete privacy and security. However, avoid pasting production tokens as a best practice.