=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Date: Fri, 03 Dec 2021 17:15:34 GMT
Server: Apache
Location: http://www.googletutor.com/google-insights-bookmarklet/
Cache-Control: max-age=600
Expires: Fri, 03 Dec 2021 17:25:34 GMT
Connection: close
Content-Type: text/html; charset=iso-8859-1

HTTP/1.1 200 OK
Date: Fri, 03 Dec 2021 17:15:35 GMT
Server: Apache
Upgrade: h2
Connection: Upgrade, close
Last-Modified: Wed, 30 Mar 2016 19:25:33 GMT
ETag: &quot;a3a0-52f491c1321bd&quot;
Accept-Ranges: bytes
Content-Length: 41888
Cache-Control: max-age=600
Expires: Fri, 03 Dec 2021 17:25:35 GMT
Vary: Accept-Encoding,Cookie
Content-Type: text/html; charset=UTF-8

Request headers
================
HEAD /google-insights-bookmarklet/ HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.googletutor.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.