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Chapter 11. preparing images & multimedi... > understanding compression

understanding compression

The goal of compression is to reduce the amount of space a file takes up, while keeping it as close as possible to its original form. Some compression techniques permanently shrink the file. Others shrink it temporarily—while in storage or transit—and expand it once delivered. (Think of stuffing big items in a small suitcase and unpacking them on the other end.)

2 kinds of compression:


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