7 Answers. If you've already compressed with best compression method, you can't compress further.. Few KB/MB could be digestible, but compressing 144MB compressed data to 22MB: No way!

Are RAR files smaller?

RAR files are smaller, easier to split and easier to recover than ZIP files. ... Use the Internet a little longer, though, and you will stumble upon a few RAR files. A RAR is, in many ways, similar to a ZIP. It is a single file containing multiple files, but unlike ZIP files you need special software to open RAR files.

Does RAR compress?

RAR is a proprietary archive file format that supports data compression, error recovery and file spanning.