DuckIntel / Security Tools

JWT Inspector

Decode JWTs, validate expiry and algorithm, inspect claims, and flag risky permissions. Fully client-side.

Decode JWTs, validate expiry and algorithm, inspect claims, and flag risky permissions. Fully client-side.

Decode JSON Web Tokens, check expiry and algorithm safety, inspect payload claims, and flag risky scopes or sensitive data in tokens.

JWT Inspector is part of DuckIntel, a free browser-based cyber intelligence platform with 59 security tools for SOC analysts, IT administrators, and security professionals. No login or account is required. All tools run entirely in your browser — your data never leaves your machine.

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Part of DuckIntel.io — 59 free browser-based security tools for SOC analysts. No login. No tracking. 100% client-side.

Cyber Intelligence Platform