HTTP Header Analyzer – Web Inspector
Inspect HTTP response headers from any URL. Analyze security headers, caching policies, and server configuration.
The HTTP Header Analyzer is a vital utility for web developers, SEO specialists, and system administrators designed to inspect the invisible metadata exchanged between a browser and a server. Whenever you visit a website, your browser sends a request, and the server responds with 'Headers' containing crucial information such as the status code (e.g., 200 OK, 404 Not Found), content type, security policies (CORS, HSTS), and caching directives (Cache-Control).
Our tool operates directly in your browser to fetch these headers for any public URL. It allows you to quickly verify if a server is online, check for proper redirection chains, and debug connectivity issues without needing command-line tools like 'curl'. Unlike complex server-side scanners, this client-side analyzer respects your privacy by performing the check from your own device IP address. Note that due to browser security measures (CORS), some detailed headers might be hidden by the target server for cross-origin requests, but we provide all data accessible to the browser.
Features
- View HTTP response headers
- URL analysis
- Copy headers
- CORS-aware
- Free with no limits
How to Use
Enter the URL: Type or paste the full website address (e.g., https://google.com) into the input field.
Start Analysis: Click the 'Analyze Headers' button to initiate a HEAD request to the target server.
Review Status: Instantly see the HTTP Status Code to verify if the site is reachable or redirecting.
Inspect Headers: Browse the list of returned headers to check server types, cookies, and security configurations.
Frequently Asked Questions
Why do I see a 'CORS Error' or limited headers?
This tool runs in your browser. Modern browsers enforce Cross-Origin Resource Sharing (CORS) security policies. If the target website does not explicitly allow your browser to read its headers (via the Access-Control-Expose-Headers header), the browser blocks access to them. This is a security feature of the web, not a bug in the tool.
What information can I learn from HTTP headers?
Headers reveal the server software (e.g., Nginx, Apache), the content type (HTML, JSON), caching rules (how long browsers should save the page), and security settings like X-Frame-Options which prevent clickjacking.
Does this tool track my activity?
No. The request is made directly from your computer to the target website. We do not act as a proxy, so your IP address is the one communicating with the server.