Image-Charts API returns a chart image in response to a URL GET or POST request. The API can generate many kinds of charts, from pie or line charts to bar charts and radars. All the information about the chart that you want, such as chart data, size, colors, and labels, are part of the URL. It can generates animated gif as well!
This is an official API
Offers SSL Support
Requires None or HMAC
Request format: HTTP GET/POST
Response format: Binary (png or gif)
