This tool is typically used to test the X-Pull configuration of your server, check if hotlink protection is working, or provide you with the full details of the HTTP response header with curl in the background, such as:
HTTP status codes
Content-Type
Vary
Expires
Cache-Control
Content-Encoding
Access-Control-Allow-Origin
And check if you have HTTP security headers in place, such as:
content-security-policy
x-xss-protection
strict-transport-security
x-frame-options
public-key-pins
x-content-type
What is curl?
curl is an open source command line tool used for transferring data with URL syntax, in this tool's case, HTTP and HTTPS requests.
Get started for free
Try KeyCDN with a free 14 day trial, no credit card required.