Chart images are exported through the ZingChart server by default.
To export images natively, you need to use a server-side image generator such as PhantomJS. We created a ZingChart PhantomJS build to help users easily set up and generate static images. Alternatively, you can create your own customized export service by downloading PhantomJS directly from their site and connecting it to ZingChart.
You can also contact our support team at firstname.lastname@example.org or talk to us on chat.