One last thing

If you host your content on an external domain we need your CORS headers to expose statistics for us to be able to analyze your data.

You can test if you need to change anything here.

Learn about CORS
Got it!

CORS intro

If you are serving your content from a different domain than the page you have added Greta to, you need to enable CORS. This settings is simply a way for your server to tell the browser that it's OK to load an external content.

In order to read data about your images, you need add following header:

Access-Control-Allow-Origin: *