Free Security Tools
Specialized security scanners for testing specific aspects of your website's security configuration.
SSL Checker
Instantly verify your SSL/TLS certificate configuration, expiration date, and security settings. Our free SSL checker analyzes your HTTPS setup and identifies potential vulnerabilities.
Security Headers Checker
Analyze your website's HTTP security headers including CSP, HSTS, X-Frame-Options, and more. Get instant recommendations to improve your header security configuration.
CORS Checker
Test your Cross-Origin Resource Sharing configuration for security issues. Detect misconfigured CORS policies that could expose your API to unauthorized access.
Cookie Checker
Free online cookie checker and scanner. Scan any website to discover all cookies, check Secure, HttpOnly, and SameSite flags, verify cookie prefixes, and get actionable security recommendations.
Email Security Checker
Verify your domain's email authentication configuration including SPF, DKIM, and DMARC records. Protect your domain from email spoofing and phishing attacks.
DNS Security Checker
Analyze your domain's DNS security configuration including DNSSEC validation, CAA records, and subdomain takeover risks. Detect misconfigurations that could expose your domain to hijacking.
CSP Checker
Analyze your website's Content Security Policy (CSP) header for security issues. Detect unsafe directives, missing policies, and misconfigurations that could expose your site to XSS attacks.
HSTS Checker
Verify your website's HSTS configuration including max-age, includeSubDomains, and preload directives. Ensure your site enforces HTTPS connections and is protected against downgrade attacks.
Website Vulnerability Scanner
Scan your website for common vulnerabilities including outdated JavaScript libraries, exposed admin panels, directory listing, source map leaks, and sensitive file exposure.
Website Security Checker
Run a comprehensive security check on any website. Analyze SSL/TLS, HTTP headers, DNS configuration, email authentication, and content vulnerabilities — all in one scan with actionable fix guidance.
Robots.txt & Security.txt Checker
Analyze your robots.txt for SEO issues and security misconfigurations. Check if security.txt follows RFC 9116. Ensure crawlers see the right pages and security researchers can reach you.
Mixed Content Checker
Detect mixed content issues on your HTTPS website. Find images, scripts, stylesheets, and other resources loaded over insecure HTTP that weaken your site's security.
Run All Security Checks at Once
Our full scanner runs 58+ security checks covering TLS, headers, CORS, cookies, DNS, and more.
Run Full Security Scan