Adding a custom preview image

This section describes how to add a custom preview image to your visualization extension. The preview image is displayed in the preview window which is accessed by selecting the visualization extension from the library.

Do the following:

1. Create a new image and save it as a PNG file. It should be saved in the same folder as your other extension files.

   Information noteThe preview image should be saved in PNG format.
   Information noteThe recommended image size of a custom preview image is 140 px x 140 px.

2. Update the QEXT file by adding the preview property as shown below. In this example we use a image of the Qlik Sense logo.

   {
       "name" : "Extension Tutorial - Hello World",
       "description" : "Extension Tutorial, Simple Hello World.",
       "icon" : "extension",
       "preview" : "qlik-sense-logo.png",
       "type" : "visualization",
       "version": "0.1",
       "author": "Your Name"
   }

You have now added a custom preview image.