How to Use

Inspect HTTP response headers for any URL. View all headers returned by the server including content type, caching, security headers, and more.

Functions

Fetch Retrieve HTTP headers from the URL

Headers View all response headers

Steps

Enter a URL to inspect its HTTP headers

Click "Fetch" to retrieve all response headers

View all response headers and their values

Use cases: Debug HTTP caching issues, verify security headers (CSP, HSTS), inspect API response headers for development

This tool is provided for authorized security testing, educational purposes, and legitimate research only.

Always obtain explicit written permission before testing on systems you do not own
Unauthorized access to computer systems is illegal in most jurisdictions
Use this tool responsibly and only for defensive security purposes
The developer assumes no liability for misuse of this tool

HTTP Headers

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