=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
X-Frame-Options: ALLOWALL
Access-Control-Allow-Origin: *
Content-Type: image/png
X-Content-Type-Options: nosniff
Date: Wed, 01 Dec 2021 06:18:42 GMT
Server: GoogleChartAPI/1.0
Content-Length: 15157
X-XSS-Protection: 1; mode=block
Connection: close

Request headers
================
HEAD /chart?cht=p3&amp;chd=t:60.2,31.6,2.6,1.7,1.1,1,0.6&amp;chs=400x200&amp;chl=Yahoo|Google|msn|Biglobe|nifty|goo|ocn&amp;chtt=Seach+Engine+Share HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: chart.apis.google.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.