It would be useful if I could reverse the polarity of an image [White on Black becomes Black on White.] Without it I must save the image, open it in my photo editor, recapture it and continue editing in Snagit Editor.
In Snagit 2018 check out color replacement. It works but is not made for exactly what you want to do. There is a batch mode available in the library that will do it. Just select the files and right click. Chose batch mode then Invert and select options to suite and you are almost done. It does NOT put the conversions (if you are making new files) into the library so you will have to drag and drop them in