Convert bkg to pdf Online: bkg2pdf

You can use Tom's Editor to easily convert images from
Movie Maker Background .BKG to Portable Document Format .PDF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

BKG

Movie Maker Background is an image format with extension BKG.

PDF

Adobe PDF format is the most popular document format. Overcomplicated. Offers compression.