Website Security Headers Checker & SSL Audit Tool
Inspect Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), and X-Frame-Options clickjacking barriers from public endpoints:
Critical HTTP Security Headers
The foundational browser defense mechanisms evaluated during every diagnostic run.
Strict-Transport-Security
Instructs browsers to never use unencrypted HTTP connections, preventing SSL stripping and protocol downgrade attacks.
Content-Security-Policy
Whitelists authorized origin domains for scripts, fonts, and network calls to prevent cross-site scripting (XSS) attacks.
Anti-Clickjacking Protection
Controls whether your site can be rendered inside an iframe, stopping malicious actors from clickjacking customer interactions.
Why Search Engines and Browsers Require Web Security Hygiene
Modern browsers immediately warn visitors when an SSL certificate is expired, insecure HTTP endpoints are served, or security configurations are misaligned. Search engines prioritize user trust by indexing secure websites and penalizing compromised or vulnerable domains.
X-Content-Type-Options
Stops browsers from MIME-sniffing a response away from the declared content type to prevent drive-by script execution.
Referrer-Policy Configuration
Safeguards sensitive URL query parameters from leaking to external third-party origins during external link navigation.
Frequently Asked Questions About Security Headers
Answers to common technical questions about website security configuration.
Q1.What are HTTP security headers?
HTTP security headers are directives sent by a web server in response to browser requests. They instruct the browser on how to handle content, enforce encrypted connections (HTTPS), restrict script execution, and defend against common attacks like clickjacking and cross-site scripting (XSS).
Q2.What is Strict-Transport-Security (HSTS)?
HTTP Strict Transport Security (HSTS) is a header that forces web browsers to communicate exclusively over secure HTTPS connections, preventing man-in-the-middle attacks and SSL stripping attempts.
Q3.Why is Content-Security-Policy (CSP) important?
Content-Security-Policy restricts the external domains from which scripts, styles, images, and fonts can be loaded. A properly configured CSP acts as a robust barrier against cross-site scripting (XSS) and data injection vulnerabilities.
Q4.What is X-Frame-Options and clickjacking?
Clickjacking occurs when an attacker renders your site inside a transparent iframe on a malicious domain to trick visitors into clicking sensitive buttons. The X-Frame-Options (or CSP frame-ancestors) header prevents unauthorized domain embedding.
Q5.Does website security affect search rankings?
Yes. Google has officially recognized HTTPS and basic security hygiene as ranking signals since 2014. Additionally, websites that suffer security compromises or lack basic protection can receive browser warning interstitial screens that drastically harm traffic.