Portable functionality in CCleaner Suggestions Posted January 11, 2011 yes, in the case of Piriforms Products (and many others that Johnj Haller Makes over at Portableapps) there is no need to use their build. Piriform provides the portable versions (see Hazelnut's link). As well if you place a check in options>advanced Save settings to ini file, it makes any piriform product immediatly portable. the portable builds (as linked above) are just zip files with an added file (portable.dat) which forces this option I quoted what he said above, because I would like to add to it. Combined with Batch Icon Extractor + WinRar, you can rar CCleaner to 1/2 or 1/3 the normal size. Long story short, use Batch Icon Extractor to grab the icon & SFX capabilities of Rar. You can make 2 or 3 times more files fit on a flash drive! P.S. The great thing is that RAR SFX auto cleanup after the file is closed & can be set to dump to the system temp dir (for speed) rather than having to run on the flash drive itself.