URL Status & Header Checker
Check HTTP response codes and analyze server-side header data instantly.
HTTP/1.1 200 OK
Date: Sat, 10 Jan 2026 14:30:00 GMT
Server: Nginx/1.24.0
Content-Type: text/html; charset=UTF-8
Cache-Control: max-age=3600
X-Frame-Options: SAMEORIGIN
X-Content-Type-Options: nosniff
The Importance of HTTP Status Codes in Technical SEO
How your server talks to Googlebot determines how well your site is indexed and ranked.
Redirect Auditing
Identify 301 and 302 redirects to ensure link equity (link juice) is flowing correctly to your target pages.
Error Detection
Quickly spot 404 (Not Found) or 500 (Server Error) status codes that could be hurting your user experience.
Server Analysis
View server signatures like Nginx or Apache and check security headers like X-Frame-Options.
What are Response Headers?
Response headers are the metadata sent by a web server to a browser. While invisible to the average user, these headers provide critical instructions on how a page should be handled. [Image showing a diagram of a Browser-Server handshake] For SEOs in 2026, checking headers like Cache-Control and Strict-Transport-Security is essential for maintaining a fast, secure website.
Common HTTP Status Codes Explained
- 200 OK: Everything is perfect. The page loaded successfully.
- 301 Moved Permanently: Critical for SEO. This tells Google the page has moved and transfers all ranking power.
- 404 Not Found: The page doesn't exist. Too many of these can increase bounce rates.
- 503 Service Unavailable: The server is temporarily overloaded. Google will try again later.
How to Use the Header Checker for Competitor Audits
By running a competitor's URL through our tool, you can see their hosting infrastructure (e.g., if they use Cloudflare) and their caching strategy. This technical intelligence helps you optimize your own server response times to match or beat the competition.