Best online file converter

Most online file converters are littered with ads and are sketchy about what they do with your files. But Vert, which is free and open-source, converts files directly on your computer, not a remote server (the exception is videos, which Vert deletes after an hour). It handles images, audio, video, and documents. The interface is clean and straightforward: drag your file, pick your format, done. — MF