JWT & SD-JWT Decoder

Developer tools to decode JWT and SD-JWT tokens. Inspect headers, claims, expiration, and disclosures for OAuth2 and OIDC—entirely client-side.

Note: JWTs are secret credentials for websites and APIs. As they grant access to protected resources they shouldn't be shared. All operations on this page remain in the browser (client-side) and are never shared or saved.

Encoded (Paste a Token Below)

Samples

Decoded (Viewable Token Details)

Header (Algorithm & Key ID)

Payload (Token Claims)

Disclosures

Key Binding JWT Header

Key Binding JWT Payload

Summary (Payload Analysis)

Token Builder

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Create unsigned JWTs (alg: "none") for testing and development purposes.

iss (Issuer)

sub (Subject)

aud (Audience)

jti (JWT ID)

iat (Issued At)

exp (Expiration)

nbf (Not Before)

Custom Claims

Version: --

Encoded (Paste a Token Below)

Decoded (Viewable Token Details)

Signature Verification

Token Builder