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JWT Debugging & API Auth Tools
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JWT Debugging & API Auth Tools

JSON Web Tokens (JWT, RFC 7519) are widely used for API auth and SSO. Decode Header and Payload, encode test tokens, convert exp/iat timestamps, and generate UUIDs for jti claims. Ideal for full-stack debugging and security learning—all operations run locally.

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JWT Decode Online

JWT decode online—parse headers, payloads, and verify signatures

Developer Tools
Encoding and Hashing

JWT Encoder

Create and sign JSON Web Tokens with custom payloads and signing algorithms

Developer Tools
Encoding and Hashing

Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa

Developer Tools

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UUID Generator Online

UUID v4/v7 generator online with batch create and validation

Developer Tools

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Token decode and encode, timestamp checks, and UUID generation.