Encoders
JWT Decoder
Need to decode JSON Web Tokens? Our free online JWT Decoder instantly parses your token into header, payload, and signature components for easy debugging and inspection.
JWT Token
Decoded JSON
Need to decode JSON Web Tokens? Our free online JWT Decoder instantly parses your token into header, payload, and signature components for easy debugging and inspection.
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Did You Know?
JWTs are encoded using Base64Url, meaning they can be read by anyone who has access to the token string.
Best Practice
Never store sensitive information like user passwords or private keys inside a JWT payload.
JSON Web Tokens (JWT) are an open, industry-standard RFC 7519 method for representing claims securely between two parties. They are widely used in modern web development for authentication (OAuth2 and OpenID Connect) and information exchange. A JWT is composed of three parts: a Header (containing algorithm info), a Payload (containing the data claims), and a Signature (used for verification), all joined by dots and encoded using Base64Url.
Tip
Always check the 'exp' (expiration) claim to ensure your tokens are not valid for longer than necessary.
Q: Does this tool verify the token signature? A: This tool is a decoder for viewing claims; signature verification requires your secret or public keys and is not performed here for security reasons.
Q: Is my token sent to your server? A: No, all decoding happens locally in your browser. Your security is our priority and the data never leaves your machine.
Q: Why is my JWT not decoding correctly? A: Ensure you have copied the entire token string, including all three parts separated by dots. Incomplete strings will result in decoding errors.
Best Practice
Use a HTTPS connection to transmit tokens to prevent interception by malicious actors.