Compressing data is the same as packing data. Digital data is compressed by finding repeatable patterns of binary 0s and 1s. The more patterns can be found, the more the data can be compressed.
Some files compress very little.
It depends entirely on the type of file and pression algorithm used. That's where DynaZIP comes in. Recognized as the leader in providing royalty free data compression for Windows developers, DynaZIP delivers. It compresses all types of data down to a really small footprint, with absolutely no loss of information. Your downloads will zip through unharmed, in a fraction of the time it used to take.