It is a fast and reliable format, that can also be protected by password, or data encrypted. The uif file extension is associated with Universal Image Format (UIF), a powerful compression image format for CD/DVD backup. UIF is just variation of ISO files, with limited support outside MagicISO. UIF files can be converted to standard ISO files with UIF2ISO utility. Did your computer fail to open uif file? We explain what uif files are and recommend software that we know can open your uif files.Ī uif file extension is associated with MagicISO and used for its proprietary disk image format.