UltraISO can extract, create, edit, and convert CD/DVD image files. It can directly edit an ISO file, make ISO images from CD/DVD-ROMs, create a new ISO from files and folders on your computer, and make bootable CDs and DVDs. In addition, UltraISO can convert nearly all known CD and DVD image formats to ISO, BIN/CUE, Nero (NRG), Alcohol 120% (MDS/MDF), and CloneCD (CCD/IMG/SUB) formats, as well as burn CD/DVD images directly through Nero Burning ROM or Microsoft cdburn/dvdburn utility.

Version 8.6.5.2160 added UltraCache feature and 'Verify' option, optimized for dual/quad core processors in compress operation, supports multi-segment NRG/ISO images created by Nero, and other improvments.