=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Tue, 16 Apr 2019 08:10:52 GMT
Server: Apache
Content-Length: 19078
Content-Type: text/html; charset=utf-8
Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
X-Content-Type-Options: nosniff
Vary: Accept-Encoding
Connection: close

Request headers
================
HEAD / HTTP/1.1
Host: gtmetrix.com
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: https://itxdesign.com
Connection: close


Link is valid.