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Why use RAR when ZIP is already there? It comes down to three main advantages:

showing ZIP vs. RAR vs. 7Z compression speeds. Why use RAR when ZIP is already there

RAR can treat multiple files as a single continuous data stream. This significantly improves the compression ratio for groups of similar files (like a series of text documents or source code). Why use RAR when ZIP is already there

Generally, RAR uses a more sophisticated algorithm than standard ZIP, resulting in smaller file sizes—especially when dealing with large sets of files. Why use RAR when ZIP is already there

If you are sending a quick document to a colleague who isn't tech-savvy, stick with for the sake of compatibility.

The go-to lightweight solution for macOS users to open RAR archives. The Verdict: When Should You Use It?