Google API: Google Charts

You basically just call the Google Chart URL within your src property with the appropriate parameters and Google Chart will draw up the graph and show it to you as a png image type.



< img src="http://chart.apis.google.com/chart?cht=p3&chd=s:hW%3Cbr%3E&chs=250x100&chl=Hello%7CWorld" />

It will create the Pie chart.

By Using Google Charts API you can generate Line chart,Venn diagram,Bar chart etc...

You can find the complete documentaion from google here