SiteSecurityScore is the fastest way to grade and fix your website's security posture. It is free and instant, with no account or setup, and it owns the configuration layer attackers probe first. Security headers, Content Security Policy, TLS, DNS records, and cookies, all graded in one scan with copy and paste fixes, then watched every day with free continuous monitoring. Here is how it lines up against the scanners, platforms, and testing approaches teams ask about most.
Free scanners that read your HTTP response headers and TLS configuration. SiteSecurityScore covers the same ground and adds DNS, cookies, deep CSP analysis, and monitoring.
Header grading plus TLS, DNS, cookies, CSP analysis, and monitoring in one scan.
Everything SSL Labs tests, plus the header and config layer it skips.
A modern header and config scan with fixes, reports, and daily monitoring.
Free unlimited header analysis next to ImmuniWeb's community scan limits.
Deeper active scanners and pentest tooling. SiteSecurityScore is the free, instant first pass for the configuration layer and the continuous monitor that runs between their heavier scans.
Instant zero setup posture scan next to ZAP's local DAST proxy.
Automated config audit for people who are not full time pentesters.
Free posture first pass next to Acunetix's paid DAST and IAST.
No license header and TLS scan next to enterprise proof based DAST.
Fast config read without a sales call, next to a full EASM platform.
Free header and CSP scan with fix generators next to Probely's paid DAST.
Free API friendly posture scan next to StackHawk's pipeline DAST.
Free config monitoring next to Intruder's paid infrastructure scanning.
Web header and config layer next to Nessus network and host scanning.
Free header focused scan with fix generators next to multi engine scanning.
Unlimited free header analysis next to a metered pentest platform.
Not every comparison is tool against tool. These guides weigh the testing methods themselves so you can decide what your site actually needs.
Why a single scan goes stale, and what scheduled re-scans catch.
Where a human audit wins, where automation wins, and how to combine them.
How continuous scanning covers the long gap between yearly pentests.
A side by side look at the free header scanners available today.
Most of the tools above are built for deep active testing or broad attack surface coverage, and many carry enterprise pricing. SiteSecurityScore owns the configuration layer attackers probe first, and it is the layer you should never skip. It catches the missing header, the weak TLS setting, the cookie without a Secure flag, and the SPF record that never got added, grades them instantly with copy and paste fixes, then keeps watch every day so nothing slips after the next deploy. It is free, instant, and the smartest first move you can make.
Enter any URL and get a complete security report covering HTTP headers, CSP, HSTS, TLS certificates, DNS records, and cookie security. No account required.
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