One Tool to Rule JWTs — Easy JWT Pentesting with JWTAuditor

JWTAuditor is an open-source, privacy-focused JWT security testing tool that performs all analysis locally in the browser without sending tokens to external servers. It automatically detects over 15 types of JWT vulnerabilities, includes built-in brute force testing with 10,000+ common secrets, and features a visual token editor with syntax highlighting. The tool addresses privacy concerns with online JWT analyzers by keeping all data client-side while providing comprehensive security analysis including algorithm validation, sensitive data detection, and security claim verification.