HTTP headers lookup

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🧾 HTTP Headers Lookup – Analyze Any Website's Response Headers

Check status codes, security headers, caching policies & server info

Use our free HTTP Headers Lookup Tool to instantly inspect the response headers returned by any website or web server. Discover critical information such as HTTP status codes, server type, content type, caching settings, and security headers.

Ideal for developers, security experts, SEO professionals and web performance analysts who want to ensure their site is secure, fast and SEO-compliant.

🔍 What Are HTTP Headers?

HTTP headers are metadata sent between a client (like a browser) and a server. They control how content is delivered, cached, secured and interpreted. Understanding response headers helps with:

✅ Debugging redirect loops and server errors
✅ Checking SSL/TLS configuration
✅ Verifying cache behavior and CDN setup
✅ Auditing security headers (e.g. CSP, HSTS)
✅ Identifying server and hosting environment

⚙️ Features of the HTTP Header Tool

✅ Shows full response headers in real time
✅ Detects HTTP status (200, 301, 404, etc.)
✅ Highlights important SEO and security headers
✅ Works with any HTTP/HTTPS website
✅ Mobile-ready and fast-loading interface
✅ Free to use with no login required

📋 Sample Output – What You’ll See

Header	Example Value	Description
Status	200 OK	Server responded successfully
Content-Type	text/html; charset=UTF-8	Format and encoding of the content
Server	nginx/1.18.0	Server software used
Cache-Control	max-age=3600	Caching policy for the resource
Strict-Transport-Security	max-age=31536000; includeSubDomains	Forces HTTPS and improves security
X-Frame-Options	SAMEORIGIN	Prevents clickjacking attacks