How do I check if an SSL certificate is valid?

Use the SSL Checker to verify certificate expiry, issuer, chain of trust, and supported protocols. Expired or misconfigured certificates cause browser warnings that drive visitors away.

What are security headers and why audit them?

Headers like Strict-Transport-Security, X-Frame-Options, and Content-Security-Policy protect against clickjacking, XSS, and downgrade attacks. Our Security Headers tool grades your configuration against best practices.

Can these tools detect malware on my site?

The Malware Scanner checks pages against known threat signatures and suspicious patterns. For ongoing protection, combine periodic scans with a web application firewall and regular software updates.

Is port scanning legal?

Scanning ports on domains you own or have permission to test is standard security practice. Only scan systems you are authorized to assess. Our Port Scanner checks common service ports for exposure.

Free Website Security & SSL Tools

Website security affects both user trust and search visibility. Expired SSL certificates, missing security headers, and malware infections can trigger browser warnings and search engine penalties.

RollDomains security tools provide quick audits for any domain or URL - SSL certificate validation, HTTP security header analysis, port scanning, malware detection, vulnerability checks, and Content-Security-Policy parsing.

Run these scans after deployments, certificate renewals, or when onboarding new sites. All tools are free and require no registration.