Converting common file formats seems like such a common use case that I really feel like there should be a tool built into modern operating systems for it. It

Converting common file formats seems like such a common use case that I really feel like there should be a tool built into modern operating systems for it. It is in modern operating systems. Maybe not Windows, but modern operating systems like macOS have it built in. You can do it a number of ways, including using Automator, Preview, or even access it from the Finder. I did it about 30 times today. Select file > right click > Quick Service > Convert