HTTP Header Checker for Response & Security Headers
Enter a public URL, choose your check settings, and run the HTTP Header Checker to review response, security, cache, redirect, and SEO header signals in one structured result.
Status & Redirects
Final URL and hop details
HTTP Request Testing
Automatic request fallback
Security, Cache & SEO
Structured header groups
Free HTTP Header Checker
Check HTTP headers, response headers, security headers, redirects, cache rules, compression, and SEO signals from a public URL.
HTTP Header Check Options
Control redirects, request methods, raw headers, and SEO-specific header details before running the check.
Follow Redirects
Follow redirects to inspect the headers returned by the final URL.
Show Raw HTTP Headers
View the complete raw HTTP response headers for technical review and export.
Show SEO-Specific Header Signals
Review canonical, robots, indexing, language, and content-type signals separately from the raw headers.
Free checks are limited to 3 uses per day. CAPTCHA may appear to protect public access.
Check HTTP response headers that affect SEO, security and performance
Check HTTP headers for status codes, redirects, security policies, caching, compression and SEO directives. Review the response returned by the server to identify configuration issues that may affect crawling, indexing, security, or resource delivery.
Review Status Codes & Redirects
Review response status, redirect hops, the final URL, and Location headers within the selected hop limit.
Review Cache & Compression Headers
Inspect Cache-Control, Expires, ETag, Vary, Age, and Content-Encoding values when returned.
Check Common Security Headers
Review returned values for HSTS, Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and Referrer-Policy.
Review SEO Response Headers
Inspect X-Robots-Tag, HTTP canonical Link, Content-Type, and Content-Language values returned for the URL.
Headers shape how pages are handled before rankings react
HTTP response headers tell browsers, crawlers, caches, and CDNs how to handle a URL. Incorrect status, redirect, cache, security, or indexing directives can affect access, delivery, browser protection, and search visibility.
Keep Important URLs Reachable
Incorrect status codes or redirects can send users and crawlers to the wrong destination or leave priority pages unavailable.
Control Content Freshness & Delivery
Cache and compression headers influence when a response is reused, refreshed, and transferred through browsers or CDNs.
Support Browser Security & Indexing
Security headers can strengthen browser protections, while X-Robots-Tag and canonical Link headers can guide indexing and consolidation.
Check HTTP Headers in Four Simple Steps
Enter a public URL, choose your check settings, run the test, and review the HTTP response headers and SEO signals in one place.
Enter a URL to Check
Enter a public HTTP or HTTPS URL to check HTTP headers and review the response returned by the server.
Choose HTTP Header Check Options
Set redirect, request method, hop-limit, and output options before using the HTTP header checker tool or HTTP header tester.
Run the HTTP Header Check
Run the HTTP header tester to retrieve the server response, follow enabled redirects, and organize the returned headers for review.
Review HTTP Response Headers
Use the HTTP response header checker results to review status codes, redirects, security headers, cache rules, compression, and SEO signals.
Use HTTP Header Checks for SEO, QA, and Launch Reviews
Check HTTP headers when you need to verify how a URL responds, redirects, caches, protects, or exposes SEO-related signals before a technical change goes live.
Check HTTP Response Headers
Use an HTTP response header checker to review status codes, redirects, cache rules, compression, and SEO-related response signals during technical SEO audits.
Validate Headers During SEO Audits
Use a server header checker tool to verify response behaviour during technical audits, migrations, QA reviews and client implementation checks.
Check Security and Server Headers
Run a security header checker to review HSTS, Content-Security-Policy, X-Content-Type-Options and other response headers after server or CDN changes.
Check Page Headers Before Launch
Use a header checker HTTP workflow to check page headers on campaign and landing pages before launch, especially after redirect or tracking changes.
Continue From HTTP Headers to Deeper URL Checks.
After reviewing one URL’s response, trace redirect patterns, verify HTTPS trust, check page-level technical signals, and review sampled index evidence.
REDIRECTS
Redirection Finder
Scan a live domain for redirect chains, temporary hops, and loops that require broader review.
OpenPAGE HEALTH
Page Technical Health Checker
Review one priority page for HTTP status, TTFB, response size, render-blocking resources, and mixed content.
OpenINDEX SIGNALS
Google Index Checker
Review sampled Google index signals and common blockers after confirming the page’s response and directives.
OpenHTTPS TRUST
SSL Certificate Checker
Check certificate validity, expiry, hostname coverage, and chain status when HTTPS trust needs separate review.
HTTP Header Checker Questions Answered
Get clear answers about HTTP response headers, security headers, redirects, status codes, caching, compression, and SEO directives.
An HTTP Header Checker is a tool that retrieves and displays the HTTP response headers returned by a URL. It can show status codes, redirects, caching directives, compression, content type, security headers, and SEO-related signals such as X-Robots-Tag. This helps developers and SEO teams identify response-level configuration issues.
To check HTTP headers, enter the full HTTP or HTTPS URL into an HTTP Header Checker and run the test. The result typically shows the response status, redirects, raw response headers, security directives, cache settings, compression, and other server response information. Review the values for unexpected or missing configuration.
An HTTP Header Checker and an HTTP Header Tester generally perform the same core task: sending a request to a URL and inspecting its HTTP response headers. The exact features vary by tool. Some provide only raw headers, while others also analyze redirects, security headers, caching, compression, and SEO-specific signals.
You can check security headers by entering a public URL into a security header checker or HTTP Header Checker. Review headers such as Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, and Permissions-Policy to identify missing or unexpected security controls.
Common security headers to review include Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Content-Type-Options, X-Frame-Options, Referrer-Policy, and Permissions-Policy. The right configuration depends on the website, application, resources, and security requirements, so a missing header should be investigated rather than automatically treated as an error.
Yes. An HTTP header check can reveal the response status code and, when redirects are followed, the redirect path and final destination. This is useful for identifying unexpected 3xx redirects, 4xx errors, 5xx responses, redirect chains, and URLs that do not return the expected response.
Yes. Some HTTP headers provide information that can affect how search engines process a URL. For example, X-Robots-Tag can provide indexing directives for HTTP responses, including non-HTML resources. Status codes and redirects also influence how crawlers handle URLs. Header checks should therefore be part of technical SEO troubleshooting when response-level issues are suspected.
An HTTP response header checker can expose response status codes, redirects, content type, caching directives, compression or content encoding, security headers, server information, and other response metadata. Depending on the tool, it may also separate SEO-specific signals such as X-Robots-Tag or canonical-related response information for easier analysis.
A server header checker tool can help verify what a server or CDN actually returns for a public URL. This is useful after server migrations, CDN changes, redirects, security configuration updates, or technical SEO changes. Comparing the returned headers with the expected configuration can help developers identify issues before they affect users or crawlers.
Yes. HTTP response headers can reveal caching and content-delivery settings such as Cache-Control, ETag, Expires, Vary, and Content-Encoding. Reviewing these values can help identify whether caching or compression is configured as expected. However, header inspection is only one part of a broader performance investigation.
Check Your HTTP Headers Before They Affect SEO
Check page headers for status codes, redirects, security headers, cache rules, compression, and SEO directives. Get the response details you need to identify technical issues before they affect crawling, indexing, or page delivery.