<human>:  How can I compress large files without losing data?
<bot>: The best way to compress large files without losing data is to use a file compression tool, such as WinZip or 7-zip, which are both widely available. These tools use a variety of algorithms to reduce the size of a file without losing any of the data. Once a file is compressed, it can be emailed or uploaded, allowing you to share large files quickly and easily.