Convt - 100% local first file convert

I built Convt after I was tired of using multiple sites at a time with some having very annoying limits. The main reason I built Convt is so I can always use it and rely on it. I wouldn't need to find a new file converter site each time. Another part I didn't like about existing solutions, was the fact that they send your file to their server, which meant they can read it. Would love any feedback, such as file formats I'm missing, or if anything is annoying or hard to use. Let me know!