If you can first convert the logo to PDF, then you could grab xpdf or poppler, then try: pdftoppm -png -aa no -r <dpi> logo.pdf logo You'll have to experiment

If you can first convert the logo to PDF, then you could grab xpdf or poppler, then try: pdftoppm -png -aa no -r <dpi> logo.pdf logo You'll have to experiment with the dpi until the logo comes out the right size. The dpi doesn't have to be an integer.