extract graph using chart.php or chart2.php return text/html string not an image

[pat@zabbix]

I'm trying to display zabbix host / host item graph in a different web page /web site. this is to avoid every one in staff dose not need a zabbix login to view graph. I've found urls

http://zabbixdomainlocal/zabbix/chart2.php?graphid=5687&width=900&height=200&from=now-7d&to=now&profileIdx=web.charts.filter

or
http://zabbixdomainlocal/zabbix/chart.php?itemids[]=76885&width=1050&height=250&from=now-7d&to=now&profileIdx=web.charts.filter
return html
is there any way that I can export graph to a image or graph data using API so that we can draw the graph back on different web page ?