A file converter is a software tool that changes a file from one format to another. For example, it can convert a PDF document into a Word file, allowing users to edit the text. File converters are useful for ensuring compatibility between different software applications or devices. These tools can handle various file types, including images, audio, and video. Many file converters are available online for free, while others may require a purchase. Users can easily upload their files, select the desired output format, and download the converted file in just a few clicks.