How to make the preview thumbnail larger in a messageML

By default, the size of the preview thumbnail in Symphony is set to a maximum height of 256 pixels (Figure 1):



Figure 1 Default Image Size


Note: The image could be smaller if the original picture is less than 256 pixels


If a customer wants to make the preview thumbnail larger, use the min-height variable to set a specific size as desired. To do this, we need to specify in the style attribute the min-height for the img element (highlighted in red):


<img style="min-height:350px" src=""/>


The code above will then render the larger image displayed below in Figure 2:



Figure 2 Larger Image Size


Please refer to this article for further information.