HTTP headers checker

Analyze and inspect HTTP response headers from any website instantly. Check security headers, caching policies, server configurations, and more with our free online tool.

What is an HTTP Headers Checker ?

An HTTP headers checker is a diagnostic tool that retrieves and displays the HTTP response headers sent by a web server when requesting a webpage. These headers contain crucial information about the server configuration, security policies, caching directives, and content specifications.

HTTP Headers Checker Usage

Security Headers Analysis

Check for important security headers like Content-Security-Policy, X-Frame-Options, Strict-Transport-Security, and X-Content-Type-Options to ensure your website is properly protected.

Performance Optimization

Analyze caching headers including Cache-Control, Expires, and ETag to optimize your websites loading speed and reduce server load.

CORS Configuration

Verify Cross-Origin Resource Sharing (CORS) headers to ensure proper API access and resource sharing across different domains.

Server Information

Identify server software, PHP version, and other technical details that can help with troubleshooting and compatibility checks.

Why Check HTTP Headers ?

Security Auditing:

Ensure your website has proper security headers to protect against common attacks

SEO Optimization:

Check for proper redirect headers and canonical URLs

Performance Monitoring:

Verify caching strategies and compression settings

API Development:

Debug CORS issues and content-type configurations

Server Migration:

Compare header configurations between old and new servers

Important HTTP Headers Explained

Content-Security-Policy (CSP)

Helps prevent cross-site scripting (XSS) attacks by controlling which resources can be loaded on your webpage.

Strict-Transport-Security (HSTS)

Forces browsers to use HTTPS connections, preventing protocol downgrade attacks and cookie hijacking.

X-Frame-Options

Prevents your website from being embedded in frames, protecting against clickjacking attacks.

Cache-Control

Specifies how long and under what conditions the response should be cached by browsers and proxies.

Content-Type

Indicates the media type of the resource, helping browsers understand how to process the content.

How to Use This Tool

Enter URL: Type the complete URL of the website you want to analyze (including https://)

Click Analyze: Our tool will send a request to the server and retrieve all HTTP headers)

Review Results: Examine the headers for security, performance, and configuration insights

Take Action: Use the findings to improve your websites security and performance