Tichau/FileConverter ? reverse-engineered prompt

Build me a simple Windows file converter app that adds options to the right click menu in File Explorer, so I can convert or compress one file or a bunch of files without opening a separate program.

I want it to feel easy to use, with clear presets for common formats and sensible defaults. It should handle images, videos, PDFs, and audio well enough for everyday use, and support compression where that makes sense. Please make the app include a small settings window where I can choose which presets show up, and let it show progress and any errors in a friendly way. If it needs external tools for conversion, use them in a clean way and keep the install experience simple. If you need to look up current docs or examples online, go ahead.