What is file compression used for?

File compression is predominantly used to reduce the size of files for more efficient storage and transmission. When files are compressed, their data is encoded in a way that minimizes the amount of space they occupy on a storage medium. This is particularly important in scenarios where storage capacity is limited or where files need to be transmitted over networks, as smaller file sizes enable faster transfers and conserve bandwidth.

Compression techniques can significantly decrease file sizes, making them easier to manage. For example, compressing large multimedia files like videos or images can allow users to store more files on their devices or upload them to cloud services without exceeding storage limits. Additionally, smaller file sizes can lead to quicker download times for users receiving the files via the internet.

The other choices, while related to file management and security, do not accurately describe the primary purpose of file compression. Encryption pertains to safeguarding data, enhancing multimedia quality relates to improving visuals or sound, and backing up files is about creating copies for safety rather than compressing them to save space.