File size
A file size measures a file's space on a storage medium, such as a computer hard drive. File sizes can be measured in bytes (B), kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), and beyond. In the picture below of files listed in Windows Explorer, the size column is sorted to show the largest file first. As shown, the first file, named "family-safety.jpg," has a file size of 47 KB. The smallest file in this picture has a file size of 32 KB.
How is file size changed?
As information is added to the file, its size increases. As information is deleted, the file size is decreases. The type of file also determines its size. For example, a text file with only text is smaller than a video file because it contains more data.
How do I make a file smaller?
If the file cannot be made smaller by removing some of its information, it must be compressed. Compressing a file makes it smaller with an algorithm to combine some data. It can then be read again after it is uncompressed. Compressing a file can be useful for when you want to attach a file to an e-mail or share it over the Internet.
It may not be possible to compress a file enough to meet your requirements. If you're attempting to share a large file, instead of compressing it, it may be better to upload the file to a file-sharing service.
BIT, Byte, Compression, Disk capacity, Exabyte, Hard drive terms, Measurements, Size