Handbrake is a free, open-source software used for converting video files from one format to another. It supports a wide range of formats, making it easy to prepare videos for different devices, such as smartphones, tablets, and computers. The user-friendly interface allows users to adjust settings like resolution and bitrate, ensuring optimal playback quality. In addition to conversion, Handbrake can also compress video files, reducing their size without significantly sacrificing quality. This feature is particularly useful for saving storage space or for sharing videos online. Overall, Handbrake is a versatile tool for anyone working with digital video.