الراوي

Imagine you wrote the same word again and again in a big notebook. cat cat cat cat cat cat cat cat cat cat That takes a lot of space on the page. But you could write the same thing like this: cat × 10 It means the same thing, but it takes much less space. ZIP does the same trick with files. Your 10 GB file probably had lots of repeating patterns. ZIP wrote those patterns in a shorter way, so it became 3 GB. Nothing was lost. It was just stored in a smarter, shorter way.