Decode and inspect JWT tokens securely

View token header and payload information directly in your browser without sending data to any server.

Important: This tool only decodes JWT token data. It does not verify the token signature because signature verification requires a secret key or public key.

✅ Free to use ✅ Works instantly ✅ No data stored

How does this JWT Decoder work?

This JWT Decoder allows you to decode JSON Web Tokens and view their encoded header and payload information. Paste a JWT token to inspect its contents directly in your browser.

Important: This tool only decodes JWT token data. It does not verify the token signature because signature verification requires a secret key or public key.

Why use a JWT Decoder?

JWT tokens are commonly used in authentication systems, APIs and web applications. A decoder helps developers quickly inspect token information during development, testing and debugging.

What is a JWT token?

JWT (JSON Web Token) is a compact format used to securely transmit information between parties as a JSON object. A JWT usually contains three parts:

Signature — used to verify token authenticity

Header — contains information about the token type and algorithm

Payload — contains the data or claims stored in the token

Can this JWT Decoder verify signatures?

No. This tool does not verify JWT signatures and does not check whether a token is authentic. Signature verification requires the appropriate secret key or public key, depending on the signing algorithm used.

This tool is designed only for safe local inspection of JWT header and payload data.

Is my JWT token stored or uploaded?

No. The JWT Decoder processes tokens directly in your browser. Your token data is not sent to JiffyFlow servers or stored.

FAQ

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