Built by security professionals, for security professionals
To simplify JWT security testing and make advanced JWT analysis accessible to every security professional, eliminating the day-to-day hassles we face during penetration testing.
JWTAuditor was born out of frustration and necessity. As penetration testers, we constantly encountered JWT tokens during our assessments, but the available tools were either too complex, required server-side processing, or lacked the comprehensive analysis capabilities we needed.
We found ourselves spending countless hours manually decoding tokens, writing custom scripts for different attack vectors, and struggling with inconsistent tooling across different client environments. The breaking point came during a particularly challenging engagement where we had to analyze hundreds of JWT tokens with varying structures and security implementations.
That's when we decided to build JWTAuditor - a tool that would address all the pain points we encountered:
Your sensitive data never leaves your browser - perfect for confidential pentests
Automated vulnerability detection and security recommendations
Optimized JavaScript performance for complex cryptographic operations
No installation required - runs in any modern browser
Smart secret detection using curated wordlists and known weak patterns
Advanced JWT editing and generation for comprehensive security testing
JWTAuditor is developed by a team of passionate security professionals who understand the real-world challenges of JWT testing (Probably).
Chief overthinker and part-time keyboard philosopher behind this project. Fueled by coffee, curiosity, and an unreasonable number of browser tabs. Known for turning late-night ideas into questionable prototypes and then pretending it was all part of the plan.
Unlike other online JWT tools, JWTAuditor processes everything locally in your browser. No tokens, secrets, or sensitive data are ever transmitted to our servers or any third-party services.
Built by pentesters who understand real-world attack vectors. Our vulnerability detection is based on actual security flaws we've encountered in the field, not just theoretical weaknesses.
We use optimized JavaScript algorithms and Web Workers for intensive tasks, ensuring that even complex brute-force operations don't freeze your browser.
Each vulnerability detection comes with detailed explanations, attack scenarios, and remediation guidance - helping you understand not just what's wrong, but why it's wrong and how to fix it.
Since its inception, JWTAuditor has helped security professionals worldwide identify and remediate JWT-related vulnerabilities more efficiently.
JWTAuditor is proudly backed by Infosecmania.com, a leading cybersecurity community and resource hub. This partnership ensures that JWTAuditor remains free, open, and continuously updated with the latest security research and vulnerability detection techniques.
Infosecmania.com's support allows us to focus on development and research while maintaining the tool's commitment to privacy and security. Together, we're building tools that make the cybersecurity community stronger and more effective.
JWTAuditor operates entirely within your browser using optimized client-side JavaScript. This means:
JWTAuditor's secret bruteforcing capabilities are enhanced by utilizing publicly available JWT secret wordlists. We want to acknowledge and thank the security community for sharing these valuable resources:
By leveraging these community-driven resources, JWTAuditor can more effectively identify weak JWT implementations and help improve overall security posture. We encourage users to contribute back to these projects and share their own security research with the community.
We're constantly working to improve JWTAuditor based on community feedback and emerging JWT attack techniques. Our roadmap includes:
JWTAuditor will always remain free, open-source, and 100% client-side. We believe that security tools should be accessible to everyone, and your sensitive data should always remain under your complete control. No servers, no data collection, no compromises - just powerful JWT security testing tools that respect your privacy.