a switch in the config setting to hide/show the small window
Switch image position by dragging the title
right click to close tab
expand target directory: focus target folder
Usage
cmd + shift + p -> Image Comparator: Open Window, opens a new comparison window.
Once the window is open, right click on image files (.png/.jpg/.jpeg) in the context menu, this will give the option Image Comparator: Add Image to add an image to the comparison window.
You can add as many images as you want, closing the comparator window will reset the image list.