Developer Tools
OWASP Security Tools
Test against OWASP Top 10 and Secure Headers Project
Free browser-based tools aligned with OWASP guidance: verify security headers against the OWASP Secure Headers Project, generate and evaluate Content-Security-Policies, test CORS configurations, analyze cookie security flags, and inspect JWT tokens for API security testing.
Security engineers, penetration testers, and application security teams working with OWASP frameworks
Tools for OWASP
Security Headers Analyzer
Check HSTS, CSP, X-Frame-Options against OWASP Secure Headers Project recommendations
CSP Generator
Build a Content-Security-Policy following the OWASP CSP Cheat Sheet
CSP Evaluator
Find CSP weaknesses: unsafe-inline, wildcards, missing directives
CORS Tester
Test cross-origin configurations — OWASP CORS Misconfiguration
Cookie Security Analyzer
Check Secure, HttpOnly, SameSite flags per OWASP Session Management Cheat Sheet
JWT Debugger
Decode and verify tokens — OWASP API Security Top 10 #2 (Broken Authentication)
SAML Decoder
Inspect SAML assertions for OWASP SAML Security concerns
Hash Generator
Argon2id, bcrypt, PBKDF2 per OWASP Password Storage Cheat Sheet
Password Strength Analyzer
Evaluate entropy per OWASP Authentication Cheat Sheet
Base64 Encoder/Decoder
Decode encoded payloads in security testing
Tips
1. Start with the Security Headers Analyzer on your production domain — an A grade means all six OWASP-recommended headers are configured.
2. Generate a CSP with Report-Only mode first, collect violations for a week, then enforce.
3. Use the Cookie Analyzer on session cookies — HttpOnly + Secure + SameSite=Lax is the OWASP baseline.