Warnings

ex ImageDesk shows colored warnings inside a picture box if the picture does not fill the box completely. Also, ex imagedesk is able to compare the picture resolution with the resolution of the output device. The color of the frame indicates the quality.

Show leaks

If this option is selected in the ex ImageDesk  preferences the parts of the box which are not covered by a picture are filled with a yellow/red background. If the width of this part should be only one pixel (which usually cannot be seen on the screen) the colored background still can be seen.

Show picture quality

ex ImageDesk is able to compare the picture resolution with the resolution of the output device and computes if the picture can be printed in a high quality.
The color of the frame indicates the quality. In case of a green frame the quality of the output is good.

The same picture has been scaled. The frame is yellow now. In this case the output will be only of a medium quality.

The same picture again has been scaled. Now a red frame indicates a poor quality when printing to the selected output device.