HTTP Header Check Tool

Quickly run an http header check to view response codes, redirects, caching policies, and security headers in real time.

What Is an HTTP Header Check Tool?

An HTTP header check tool allows you to inspect the metadata exchanged between browsers and servers. This includes response codes, caching rules, content types, and security headers. Running a security header check helps developers, SEO specialists, and security analysts ensure everything is configured correctly.

By using a header checker, you can verify server responses, optimize SEO, and improve website security and performance.

How to Use the HTTP Header Checker

  1. Enter a Website URL: Type any domain, subdomain, or API endpoint.
  2. Click “Check Headers”: The system retrieves the HTTP response headers instantly.
  3. Review Detailed HTTP Response Output: Check status codes, redirects, content type, cache-control, and security headers.
  4. Analyze Key Information: Use the results to troubleshoot performance, SEO, and security issues.
HTTP Header Check Tool

Features of Our HTTP Header Checker

  • Instant Online Header Lookup – No Installation Needed
  • Supports All HTTP Methods (GET, POST, HEAD, etc.)
  • Detects Redirect Chains and Final Destination URLs
  • Shows Key Headers (Server, Content-Type, Cache-Control, etc.)
  • Mobile-Friendly Interface & Developer Tools Integration
  • Free and Unlimited Use

Why Use an HTTP Header Checker?

  • Diagnose Server Misconfigurations and Errors
  • Check for Proper Redirects (301, 302, etc.)
  • Analyze Cache-Control and Content-Security Policies
  • Troubleshoot HTTPS Issues and SSL Status
  • Validate Custom Headers for APIs and Apps

Who Needs This Tool?

  • Web Developers & Programmers
  • SEO Specialists & Digital Marketers
  • Cybersecurity Analysts
  • System Administrators
  • API & SaaS Product Teams

Common HTTP Headers Explained

  • Status Codes: Indicates success, redirection, client error, or server failure (e.g., 200, 301, 404).
  • Content-Type & Encoding: Confirms file formats (HTML, JSON, XML) and optimizes delivery.
  • Cache-Control: Defines how long browsers and proxies should store resources.
  • Security Headers (CSP, HSTS): Validates strict encryption rules and prevents malicious scripts.
  • Server & X-Powered-By: May reveal software info; masking is recommended for security.

Frequently Asked Questions (FAQs)

Is the HTTP header data live or cached?

The tool fetches data live from the server for up-to-date results.

Can I check headers of redirected URLs?

Yes, it analyzes the full redirect chain and final destination headers.

Does this tool show request and response headers?

Yes, both request and response headers are provided for complete visibility.

Is it safe to check private URLs?

Yes, the tool is secure; no data is stored or shared externally.

Can I test headers for APIs and localhost?

Yes, you can check headers for local or staging environments as well as API endpoints.

Does it support HTTPS and HTTP/2 or HTTP/3?

Yes, it works across HTTPS, HTTP/2, and HTTP/3 protocols.