HTTP response status
Check whether the website responds with a valid HTTP status code.
100% Free • No Signup • Live HTTP
HTTP Header Checker
Check HTTP response headers, redirects and common security headers for any website.
HTTP status • Redirects • Security headers • Server headers • HSTS • No signup
What this checker validates
One check reviews HTTP response status, redirects, response headers and common security headers.
Redirect chain
Review redirects from HTTP to HTTPS and final destination URLs.
Security headers
Check headers such as HSTS, CSP, X-Frame-Options and Referrer-Policy.
Server headers
Inspect server, powered-by and cache-related headers.
HTTPS availability
Verify whether the website is available over HTTPS.
Header visibility
Display response headers in a clean, copyable table.
Common HTTP header issues this tool can detect
Find website response and header configuration issues that may affect security, privacy or technical SEO.
- CriticalWebsite not responding
- CriticalHTTP 5xx error
- WarningHTTP does not redirect to HTTPS
- WarningRedirect chain too long
- ReviewHSTS header missing
- ReviewContent-Security-Policy missing
- ReviewX-Frame-Options missing
- ReviewX-Content-Type-Options missing
- ReviewReferrer-Policy missing
- InfoServer header exposes technology
- InfoX-Powered-By exposes framework
How HTTP header checking works
The checker requests the website and analyzes response headers and redirect behavior.
Enter a website
We clean the input, normalize the URL and prepare HTTPS and HTTP checks.
Fetch response headers
The tool requests the website and records HTTP status, redirects and response headers.
Review recommendations
We highlight missing security headers, exposed technology headers and redirect issues.
Understanding security headers
Security headers help browsers apply safer behavior, but they do not replace a full website security audit.
Strict-Transport-Security
Tells browsers to use HTTPS for future visits.
Content-Security-Policy
Controls which scripts, styles and resources can load on the page.
X-Frame-Options
Helps reduce clickjacking risk by controlling page embedding.
X-Content-Type-Options
Helps prevent browsers from guessing content types incorrectly.
Referrer-Policy
Controls how much referrer information is sent to other websites.
Permissions-Policy
Controls access to browser features such as camera, microphone and location.
Security headers improve browser-side protection, but they do not replace a full website security audit.
Checking HTTP headers…
Website hardening next steps
HTTP headers are only one part of website security. Review SSL, redirects, DNS, CMS settings and application security for a complete picture.
Need help fixing headers or website technical issues?
Send us your website report and we\u2019ll review the issue.
Frequently asked questions
HTTP headers are metadata sent between a browser and a server. They can include status, caching, security and server configuration information.
Security headers are HTTP headers that help browsers enforce safer behavior, such as HTTPS usage, content restrictions and clickjacking protection.
Not always. Content-Security-Policy is useful but must be configured carefully. A badly configured CSP can break website functionality.
Yes, it is strongly recommended. Redirecting HTTP to HTTPS helps ensure visitors use the secure version of the website.
It is usually an information disclosure issue, not a critical vulnerability by itself. Reducing exposed technology details can still be a good hardening step.
No. The HTTP Header Checker is free and does not require signup.