Showing Images with Card Browser

Hello all,

I have a powerapp that takes images and stores the image data into a sharepoint list (ex: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAeAAAA.......). Now i want to visualize these images through powerbi. I imported the card browser from the marketplace and placed the imagedata column from the SP list into the appropoate URL fields on the card browser. The images do show, but barely only a little. they are cut off (see image) Does anyone know the issue here or even a better way to do it ? 

Thanks !