JWT Decoder
Decode and inspect JWT (JSON Web Tokens). View the header, payload and verify expiration. Processed 100% in the browser — the token never leaves your device.
What is a JWT?
A JSON Web Token (JWT) is an open standard (RFC 7519) for transmitting information between parties as a compact JSON object. It consists of three parts separated by dots: Header (algorithm), Payload (data) and Signature (signature). The token is not encrypted by default — only encoded in Base64URL.
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