Hi we can't enlarge the preview window too much, because it will make the dialog bigger , and the small screen such as 1366x768 can not show it well any more.

@UserSupport Does anybody use 1366x768 any more ?   Most people are migrating to 4k this year

Hi. First i have to say that i'm impressed by all the work done in a "free" program. I was amazed to see all these features you have implemented that in some cases are even more functional than multi KUSD EDA programs . Now regarding the issue you mention i did notice that actually preview is too small . Imagine a designer seeing a component and not knowing if it's footprint is correct or is actually the part he is looking . Some EDA programs even use a small measuring tool to confirm dimensions . While others have even a 3D preview of part . Now the answer you can find is by observing how other programs solve that problem . I personally like what Proteus and EasyPc do in that situation . I also find very handy how componentsearchengine presents a part . Selection can be a 2 step process . 1\. Locate part in table \. 2\. Examine in Preview \.It's really a crucial point that you must  not neglect to solve \. A schematic work is mainly library creation and part check \. So easy \,fast part selection and library organization are the key points in a efficient  Schematic drawing program\. The rest is solved by some nets .I was amazed when i show that you have KICAD , EAGLE, ALTIUM import functions. All these for free !!!. Anyhow keep up the good work .