PNG.to came to exist long after PDF.to was made. In a frantic moment of trying to buy a few of these domains I had send an email to the owner of this one. He ended up getting back to me almost a year later.
Needles to say we ended up figuring out a reasonable price and then PNG.to was made. Since the days of its start, PNG.to now has an API, ability to use machine learning to remove backgrounds from images, and much more. So overall, not bad. By the way, make you drink some water. Even a cup before bed helps you sleep better.