Security Headers Scanner: Analyze and Harden Your Website
Is your website leaking information or vulnerable to injection attacks? Our Security Headers Scanner provides an instant analysis of your site’s HTTP response headers. HTTP security headers are a fundamental layer of web security, instructing browsers how to handle your content safely. Use this tool to identify missing protections and get actionable advice on how to fix them.
Why Are HTTP Security Headers Important?
Server-side security isn't just about firewalls and SSL certificates; it’s also about how your server communicates with the user's browser.
Defend Against Common Attacks
Missing headers leave your site vulnerable to Cross-Site Scripting (XSS), Clickjacking, Code Injection, and MIME-sniffing. By correctly configuring these headers, you tell the browser to ignore malicious instructions and stick to your security policy.
Improve Your SEO and Trust
Search engines like Google prioritize secure websites. While HTTPS is the baseline, having a complete set of security headers signals that your site is professionally maintained and safe for users, which can indirectly benefit your search rankings and user trust.
What Does Our Security Scanner Check?
Our tool evaluates the presence and configuration of the most critical security headers used in modern web development.
1. Content Security Policy (CSP)
CSP is one of the most powerful tools against XSS. It defines which dynamic resources (scripts, styles, images) are allowed to load, preventing malicious scripts from executing on your page.
2. HTTP Strict Transport Security (HSTS)
HSTS forces browsers to communicate with your server only over secure HTTPS connections. This prevents "Man-in-the-Middle" (MitM) attacks and protocol downgrade attacks.
3. X-Frame-Options
This header protects your visitors against Clickjacking. It tells the browser whether your site is allowed to be embedded in an <iframe>, preventing attackers from overlaying invisible layers to steal clicks.
4. X-Content-Type-Options
Setting this to nosniff prevents the browser from trying to guess the MIME type of a file. This stops attackers from disguising executable code as simple images or text files.
5. Referrer-Policy
This controls how much information is included in the "Referer" header when a user clicks a link that leads away from your site, protecting your users' privacy and internal URL structures.
How to Use the Security Headers Scanner
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Enter your URL: Type your website's full address (e.g.,
https://example.com) into the search bar. -
Run the Scan: Click the "Analyze" button. Our tool will make a secure request to your server.
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Review the Report: See a detailed breakdown of which headers are present, which are missing, and which are misconfigured.
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Implement Fixes: Use our recommendations to update your server configuration (Nginx, Apache, or Cloudflare).
Technical Insights: Implementing Secure Headers
How to Add Headers to Your Server
Most security headers can be added via your web server configuration file. For example, in Nginx: add_header X-Frame-Options "SAMEORIGIN" always;
Or in Apache (.htaccess): Header set X-Frame-Options "SAMEORIGIN"
The Role of Permissions Policy
Formerly known as Feature-Policy, this header allows you to control which browser features (like the camera, microphone, or geolocation) can be used by your site or any iframes you embed, further shrinking your attack surface.
Frequently Asked Questions (FAQ)
Does a "Green" score mean my site is 100% secure?
No tool can guarantee 100% security. While security headers provide a vital layer of defense, they should be part of a broader strategy that includes regular updates, secure coding practices, and strong authentication.
Can these headers break my website?
Yes, particularly the Content Security Policy (CSP). If a CSP is too restrictive, it might block legitimate scripts. We recommend testing your headers in a staging environment or using "Report-Only" mode before full implementation.
Is this scan private?
Yes. We do not store the results of your scans or your URL history. The analysis is performed in real-time to provide you with the most up-to-date security status.