JWT Parser
Parse JWT tokens to understand their structure. See exactly how JWTs are formatted with clear separation of header, payload, and signature components.
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💡 Tip: JWT tokens consist of three parts: Header (algorithm info), Payload (claims/data), and Signature (verification). This tool decodes the header and payload but cannot verify signatures without the secret key.
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Frequently Asked Questions
What are the parts of a JWT?
A JWT has three parts separated by dots: 1) Header (algorithm and type), 2) Payload (claims/data), 3) Signature (verification hash).
Why is Base64URL encoding used?
Base64URL encoding makes JWTs safe for use in URLs and HTTP headers by avoiding special characters like + and /.
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