The tar package for Node.js provides comprehensive tarball handling capabilities. It allows you to create, extract, and manipulate tar archives with ease. Supporting various tar formats, including GNU, PAX, and more, tar offers granular control over file permissions, ownership, and extended attributes. Ideal for packaging and distributing application assets, backing up data, and managing file system snapshots, tar is a versatile tool for any Node.js project dealing with archive management. Stream-based processing ensures efficiency when working with large files.