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Header Checker

HTTP Headers Checker Tool

Analyze HTTP response headers, status codes, and security settings

Common HTTP Headers Explained

📤 Response Headers

Content-Type: MIME type of content

Server: Web server software

Cache-Control: Caching directives

Content-Encoding: Compression method

>Last-Modified: Last update date

🔒 Security Headers

Strict-Transport-Security: Force HTTPS

X-Frame-Options: Prevent clickjacking

X-Content-Type-Options: MIME type security

Content-Security-Policy: XSS protection

X-XSS-Protection: Cross-site scripting filter

🔢 HTTP Status Codes

200: OK - Success

301: Moved Permanently

302: Found (Temporary Redirect)

404: Not Found

500: Internal Server Error

Security Headers Best Practices

🔒 Strict-Transport-Security (HSTS)

Forces browsers to use HTTPS. Example: max-age=31536000; includeSubDomains

🛡️ X-Frame-Options

Prevents clickjacking attacks. Use: DENY or SAMEORIGIN

🔐 Content-Security-Policy

Controls resources the browser can load. Prevents XSS attacks.

🎯 X-Content-Type-Options

Prevents MIME type sniffing. Always use: nosniff

Performance-Related Headers

Cache-Control

Controls how long browsers cache resources

max-age=3600, public
Content-Encoding

Compression method used (gzip, br)

gzip
ETag

Resource version identifier for caching

"33a64df551425fcc55e"
Expires

When the resource should be considered stale

Wed, 21 Oct 2026 07:28:00 GMT

Why Check HTTP Headers?

  • Security Audit: Verify security headers are properly configured
  • Performance Optimization: Check caching and compression settings
  • Redirect Chains: Identify unnecessary redirects slowing down your site
  • Server Information: See what technology powers your website
  • SEO: Ensure proper status codes and canonical headers
  • Debugging: Troubleshoot issues with page loading or security


Free HTTP Header Checker | Professional Server Response Analyzer

Our HTTP Header Checker is a specialized technical tool designed to inspect the server-side communication and response headers of any URL.

HTTP Response Headers provide critical information about how a web server interacts with browsers and search engine crawlers. By using this analyzer, you can verify HTTP Status Codes (such as 200 OK, 301 Redirects, or 404 Not Found) to ensure your pages are accessible and correctly indexed. Monitoring these headers is essential for identifying redirect chains that can dilute your SEO authority and slow down your page load speed.

In the 2026 security-first web environment, checking for Security Headers like X-Frame-Options, HSTS, and Content Security Policy (CSP) is a requirement for maintaining user trust and search rankings. Our tool reveals hidden server data, including Server Latency, Cache-Control settings, and compression types like Gzip or Brotli. Analyzing your headers allows you to optimize server performance, resolve "soft 404" errors, and ensure your site is delivering the correct canonical signals to Google and other major search engines.