What is JSON Web Token?

A JSON Web Token is a compact, URL-safe token carrying JSON claims in three Base64url segments: header, payload and signature. The payload is signed, not encrypted, so anyone holding the token can read it.

Also written as RFC 7519

Primary sources

Specifications cited by the tools below whose own titles define JSON Web Token.

RFC 7519 - JSON Web Token (JWT)IETF

3 tools that work with JSON Web Token

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Encoders & Decoders1

JWT DecoderDecode a JSON Web Token to inspect its header, payload and expiry — locally, never sent anywhere.

Hash & Crypto Tools2

JWT SignerCreate a signed HS256, HS384 or HS512 JSON Web Token for testing, entirely in your browser.JWT VerifierVerify a JWT's HS256 signature and its expiry, issuer and audience claims, entirely in your browser.

Related terms

Terms that appear alongside JSON Web Token on the same tools.

HMAC

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