A QlikView extension allows you to visualize your data the way you want to see it.
With extensions, fully interactive custom visualizations can be used directly from within QlikView.
This feature enables the use of specialist visualizations and user interface components that are not present in standard QlikView.
Extensions allows you, for example to create and use a map or a tag cloud directly from within your QlikView application just like any other QlikView object.
QlikView extensions are designed to work in the QlikView Ajax client. It also works in QlikView Desktop if you turn on WebView.