It automatically recognizes and selects the best compression method. This will save you disc space, transmission costs, AND valuable working time. By consistently creating smaller archives, WinRAR is often faster than the competition. The archiver puts you ahead of the crowd when it comes to compression. WinRAR can back up your data, reduce the size of email attachments, decompress RAR, ZIP, and other files downloaded from the Internet, and create new archives in RAR and ZIP file format. RAR files can usually compress content by 8 to 15 percent more than ZIP files. It has a unique compression algorithm compresses multimedia files, executables, and object libraries particularly well. Free Download WinRAR full version installer + Portable for Windows PC.