I've been trying to apply an image as a signature on a document, but while the image (.jpg) looks fine when I open it separately, it appears as a negative (i.e. white signature on a black background) when I insert it. While I can change the "color" of the image using the Fill & Sign menu bar, it only changes the background to white, while keeping the signature white as well.
Using Acrobat Reader DC.
Security digital signatures and esignatures, Windows