First off, as others have stated, hats off for making a truly excellent PDF viewer, SumatraPDF is so much better than everything else out there in the bloatware sphere
A small feature request, Acrobat Viewer has an option for “Show Transparency Grid”. I’ve tried tinkering with background color settings (in advanced settings) to add alpha transparency (like #00FFFFFF) without much luck… basically what I’m looking for is, if the PDF has a transparent background, the option to show it as a grid instead of as default color white which is the current behavior.
Kudos again. Love this PDF viewer.