I am using HighCharts Javascript library for a web application and would like to have an image watermark inside the charts (let's say a small image on the left top corner). Not only to show this watermark image in the browser, but also when someone would export the chart to JPG or PNG.
I have seen this somewhere once in a web application that also uses HighCharts but can't remember where that was.
Any suggestions?
Look at this: http://jsfiddle.net/highcharts/cDcw7/ Tip: I figured out, that it is important for the export function to work correctly, that the URL starts with http://...