Security Header Checker
Checks common security headers like HSTS, CSP, X-Frame-Options, and more.
About This Tool
The Security Header Checker is an online tool that helps website owners, developers, and security professionals analyze HTTP security headers used by a website. Security headers are important components of web security because they instruct browsers on how to handle content safely and protect websites from various types of attacks.
Modern websites face multiple security threats such as cross-site scripting (XSS), clickjacking, content injection, and data interception. Security headers help reduce these risks by enforcing specific rules on how browsers load resources, handle scripts, and communicate with servers. When implemented correctly, they strengthen website security and protect both website data and user information.
This Free Security Header Checker allows users to quickly scan a website and identify which security headers are present or missing. It analyzes server responses and reports important headers that influence security policies and browser behavior.
The HTTP Security Header Test commonly checks headers such as Content Security Policy (CSP), X-Frame-Options, X-Content-Type-Options, Strict-Transport-Security (HSTS), Referrer-Policy, and Permissions-Policy. These headers help control how browsers interact with website content and prevent malicious activity.
This tool is especially useful for developers performing security audits, system administrators configuring servers, and agencies reviewing client website security. Missing or incorrectly configured headers can leave websites vulnerable to attacks and data exposure.
The Website Security Header Checker also helps website owners maintain best security practices by identifying gaps in their server configuration. After detecting missing headers, users can update server settings, web application firewalls, or hosting configurations to strengthen website protection.
Whether you are improving website security, performing a technical audit, or preparing for compliance checks, the Security Header Checker provides a fast and simple way to review security headers and enhance the protection of your website.
How It Works
1️⃣ Enter the Website URL
Paste the webpage or domain URL you want to test into the input field.
2️⃣ Send a Server Request
The tool connects to the website and retrieves the HTTP response headers.
3️⃣ Analyze Security Headers
The Security Header Checker examines the response headers to identify important security configurations.
4️⃣ View the Results
Review which security headers are present, missing, or improperly configured.
5️⃣ Improve Website Security
Use the results to implement missing security headers and strengthen your website’s protection.
At Trend Web Technologies develops professional developer tools, SEO utilities, and productivity solutions that help businesses and website owners simplify technical tasks and improve digital workflows.
Still Have Questions?
Security headers are special HTTP response headers that help protect websites from various web-based attacks.
No. SSL encrypts data, but security headers provide additional layers of protection against specific attack types.
Your website may be more vulnerable to attacks like XSS, clickjacking, and content injection.
No. URLs are processed temporarily and not permanently stored.
