Here are some useful tools that allow you to uncompress rar, tar or zip files online.  No need to have a program installed to unzip for you.  Unrar, Unzip, Ungz and Untar with just Chrome or any browser you have. Convert Files - free online file converter http://www.convertfiles.com/convert/archive/RAR-to-ZIP.html Convert files online tool allows you to convert RAR to zip file.   A neat tool called Wobzip let’s you unzip and unrar all entirely online.  No need to have Winrar, it’s a must have if your work or school computer won’t let you install winrar.   I just unzipped a rar file just now, and I can say it for sure works. http://wobzip.org/ unzip unrar online