The images in the original application were sized for readability. The images in the new application are smaller than the original. There needs to be a way to configure the image viewer dialog to show the image in the original size, for the case where that size is the intended size. As it is the graph text is very difficult to read.
Resizing the image just stretches horizontally. The image should retain is aspect (not distort), and resize as the dialog is resized.
There seems to be wasted space under the image.
In the future, it may be useful to show an image description, such as to the right of the image.
I am reviewing the 2.0.0 version.
Here is feedback on the image viewer: