Free utilities for developers and security professionals. Client-side tools keep your data in your browser.
MAUL (Model & Agent Unsafe Lab) is an open source, deliberately vulnerable AI application designed for penetration testing training and security research. With 50+ vulnerabilities covering the OWASP LLM Top 10, MAUL provides a safe sandbox for learning AI security hands-on.
Analyze your site's robots.txt and meta tags to see which AI crawlers can access your content
Analyze system prompts for security vulnerabilities and get remediation guidance
Find and remove invisible characters (zero-width, RTL overrides, control chars) hidden in text
Scan LLM output for PII, secrets, markdown injection, and other data leakage patterns
Analyze MCP server configs for dangerous tool permissions and get risk ratings
Forward-looking assessment of TLS configuration for post-quantum cryptography based on NIST standards
Parse and inspect JSON Web Token claims, check expiry, and view payload data
Pretty print, validate, and minify JSON with syntax highlighting
Encode or decode Base64 strings with UTF-8 support
Percent-encode or decode URLs and query string parameters
Query A, AAAA, MX, TXT, CNAME, NS, SOA, CAA records for any domain with reverse DNS support
Validate email authentication records and configuration
Check certificate expiry, chain validity, and security configuration
Proprietary 0-100 domain authority score blending SEO foundations and security posture