ScaleWhite Tools

HTTP Header Checker

Inspect HTTP response headers for any URL.

What is this tool?

This tool sends a HEAD request to the specified URL via our API proxy and displays all HTTP response headers. Useful for checking caching, security, CORS, and content-type headers without opening browser DevTools.

How to Use

  1. Enter a URL (http or https) in the input field.
  2. Click the 'Check Headers' button.
  3. View the HTTP status code and all response headers.

Examples

  • Check cache headers (Cache-Control, ETag) of your CDN.
  • Verify security headers (Content-Security-Policy, Strict-Transport-Security).
  • Inspect CORS headers (Access-Control-Allow-Origin) on an API endpoint.