HTTP response status
Check whether the website responds with a valid HTTP status code.
100% Free • No Signup • Live HTTP
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HTTP Header Checker
Check HTTP response headers, redirects and common security headers for any website.
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Free header check • Live HTTP • No signup
Requests the website over HTTPS and analyzes response headers from our servers.
Why HTTP security headers matter
Security headers tell browsers how to handle your site — enforcing HTTPS, blocking clickjacking, and limiting which scripts and resources can load. Missing or weak headers leave visitors more exposed even when SSL is valid.
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.
Availability & errors
- Website not responding
- HTTP 5xx server errors
- Connection or timeout failures
HTTPS & redirects
- HTTP does not redirect to HTTPS
- Redirect chain too long
- Final URL differs from input
Security headers
- HSTS header missing
- Content-Security-Policy missing
- X-Frame-Options or XCTO missing
Server disclosure
- Server header exposes technology
- X-Powered-By header present
- Verbose cache or debug headers
Header definitions and hardening guidance are in our HTTP security headers guide.
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.
When to check HTTP headers
- New site launch
- After CMS or plugin update
- Post-migration or hosting change
- Security audit
- Periodic hardening review
- Before compliance review
Understanding security headers
Security headers help browsers apply safer behavior.
HSTS
Strict-Transport-Security tells browsers to use HTTPS for future visits.
CSP
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.
Checking HTTP headers…
Need help fixing headers or website technical issues?
Send us your website report and we'll review the issue.
Learn more: HTTP security headers guide · SSL Checker
Header analysis reflects one HTTP response from our servers. CDN or geo routing may vary. How we check
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.