YTMP4 is an online YouTube to MP4 converter tool that allows users to convert YouTube videos into MP4 files. The service is designed for those who wish to save YouTube videos to their devices for offline viewing. It’s a simple and easy-to-use platform where users can copy and paste the URL of any YouTube video, and the tool will convert it into an MP4 format. The MP4 format is one of the most widely supported video formats, making it compatible with nearly all devices and media players.