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Website Security Checker

Free online website security checker. Scan any website to analyze SSL/TLS, HTTP security headers, DNS configuration, email authentication, cookie security, and content vulnerabilities — all in one scan. Get instant pass/fail results with step-by-step fix guidance for every issue found.

Results in 1–3 minutes · Free · No signup required

What We Check

SSL/TLS certificate and protocol analysis
HTTP security headers audit (CSP, HSTS, CORS)
DNS and email authentication check (SPF, DKIM, DMARC)
Content vulnerability detection
Cookie security verification
Mixed content and redirect chain analysis

How It Works

1

Enter any website URL to start the security check

2

We run 62 automated checks across TLS, headers, DNS, and content

3

Each check is evaluated against industry best practices

4

Issues are ranked by severity with clear remediation steps

5

You receive a full security report you can share with your team

Security Checks Included

This tool runs the following security checks on your website

HTTPS enabledTLS VersionCertificate ExpiryContent Security Policy (CSP)HSTS enabledFrame Security PolicyX-Content-Type-Options headerReferrer PolicyEmail Domain Security (SPF/DKIM/DMARC)DNS Security

Frequently Asked Questions

What is a website security checker?
A website security checker is a free online tool that automatically scans your site for security vulnerabilities across SSL/TLS, HTTP headers, DNS, email authentication, cookies, and content. It runs 62 checks against industry best practices and shows pass/fail results with specific fix instructions.
How do I check my website security?
Enter any website URL in the security checker above. We'll run 62 automated tests across SSL certificates, HTTP security headers, DNS records, email authentication, and content vulnerabilities — and return results in seconds with prioritized fix recommendations.
What does the website security checker scan for?
We check SSL/TLS configuration (certificate expiry, TLS version, cipher suites), HTTP security headers (CSP, HSTS, CORS, X-Frame-Options), DNS and email authentication (SPF, DKIM, DMARC), content vulnerabilities (outdated JS libraries, exposed files), and cookie security attributes.
Is the security check free?
Yes. The free tier runs all 62 security checks for free. Upgrade to the paid plan to unlock unlimited scans across multiple domains and continuous monitoring with alerts when security regressions are detected.
How often should I check my website security?
We recommend scanning after every deployment, when changing hosting or DNS settings, and at least monthly. Security configurations drift over time as dependencies update and infrastructure changes — issues often appear without any deliberate change.
Is this scanner safe to use on my website?
Absolutely. Our scanner is completely non-intrusive — it only makes standard HTTP requests that any browser would make. We never attempt to exploit vulnerabilities or perform penetration testing. Your site and users are not at risk.
What security score should my website aim for?
Aim for 80+ out of 100. Our scanner weights issues by severity — critical issues like missing HTTPS or weak TLS drop the score significantly, while lower-priority headers have less impact. Focus on critical and high-severity issues first.

Ready to Check Your Website?

Run a free security scan now and get instant results with actionable fix recommendations.

Results in 1–3 minutes · Free · No signup required

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