Website Security Headers & SSL Checker
Analyze HTTP response security headers including Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Frame-Options, X-Content-Type-Options, and Referrer-Policy.
About the Security Headers Checker
Inspect HTTPS, HSTS, Content Security Policy (CSP), X-Frame-Options, and critical HTTP security headers. Use this free tool as a focused first review, then prioritise the improvements that matter most to your visitors, visibility, and business goals. Every result is easier to act on when you compare it with your live website, analytics, and customer feedback.
What this tool helps with
The Security Headers Checker helps you review whether your public website and business communications present stronger trust and security signals. It is built for business owners, web developers, and teams maintaining a public website or company email domain who need a clear next action rather than a long, unfocused checklist.
How to use the result
- Provide the public URL or domain requested by the check.
- Read each finding in the context of your hosting, DNS, or application setup.
- Confirm changes after deployment and seek specialist advice for high-risk findings.
Best practices for stronger results
- Use HTTPS on every public URL.
- Review security headers after platform changes.
- Keep DNS authentication records maintained.
Important: It does not perform intrusion testing, vulnerability exploitation, or a complete security certification.
Security Headers Checker FAQs
Answers to common questions before you use this free online tool.
What does the Security Headers Checker do?
Inspect HTTPS, HSTS, Content Security Policy (CSP), X-Frame-Options, and critical HTTP security headers. It gives you a practical first review without installing software or creating an account.
How does the Security Headers Checker work?
The tool inspects publicly exposed HTTP headers or DNS records and highlights configuration gaps. Results reflect the public URL, domain, or values you submit at the time of the check.
Who should use the Security Headers Checker?
It is useful for business owners, web developers, and teams maintaining a public website or company email domain. You can use it before a launch, during a website review, or when prioritising your next improvement.
What should I do after using the Security Headers Checker?
Start with the most relevant finding, make the change in your live environment, and run the tool again. Combine the result with analytics, user feedback, and business context before making important decisions.
Are the Security Headers Checker results completely accurate?
It does not perform intrusion testing, vulnerability exploitation, or a complete security certification. Use the result as a practical starting point and validate important changes in your live environment.