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→GameCube / Wii
* '''Archive-quality dump?''' Yes for GC games, Not directly for Wii games. (checksum won't be the same, no gameplay issues - may be unscrubbed with [https://gbatemp.net/threads/new-app-nkit-restore-shrink-and-preserve-disc-images-in-playable-formerly-swiit.533402/ NKitRestore])
* '''Gain:''' Immediate (ISO dump size lowers). Considerable, depending on the game.
* '''Tools Used:''' Dolphin; (right-click the game(s) in the games list and select "Compress ISO..." (or "Compressed selected ISOs..." if more than one is selected)); or [https://wit.wiimm.de/ wit (Wiimms ISO Tools)]
* '''Can be reverted?''' Yes. You can right-click on the GCZ-compressed (in blue) ISOs in Dolphin and choose "Uncompress selected ISOs". Garbage data for Wii titles will be zeroed out and thus different from the official dump but will have no effect on gameplay in most cases - if desired can be unscrubbed [https://gbatemp.net/threads/new-app-nkit-restore-shrink-and-preserve-disc-images-in-playable-formerly-swiit.533402/ NKitRestore].
* '''Playable on Hardware?''' No
===Scrubbing and Trimming - GC/Wii===
* '''Archive-quality dump?''' No (missing data)Not directly, see note about reversing.
* '''Gain:''' Not Immediate for just scrubbing (ISO dump size the same); Immediate for trimming (ISO dump size lowers).
* '''Tools Used:''' GC-Tool ("wipe garbage data..." - Scrubbing for GameCube), GameCube ISO Trimmer (scrubbing and trimming for GameCube), WiiScrubber (scrubbing for Wii, although compressing with Dolphin will scrub it anyways).* '''Can be reverted?''' Yes, with WiiScrubber's undo file or (in case of scrubbing) [https://gbatemp.net/threads/new-app-nkit-restore-shrink-and-preserve-disc-images-in-playable-formerly-swiit.533402/ NKitRestore]
* '''Playable on Hardware?''' Yes for scrubbing; some games won't work trimmed.
* '''Playable on Emulators?''' Yes for scrubbing; some games won't work trimmed.
Scrubbing games zeros out garbage/dummy data in the ISO file. The resulting file will be the same size, but it will be able to compress better than unmodified ISOs. The difference can be huge depending on the game. Animal Crossing, for instance, will compress to just a 26 MB .gcz file after being scrubbed!
Trimming games implies scrubbing, but will also remove the garbage/dummy data outright, resulting in a smaller ISO file. The trimmed file can be used immediately at a smaller size without compression, but the game's internal structure will be wholly modified. '''Several games (the ones relying on direct sector access, as opposed to consulting the filesystem) will break if you trim them.'''
===WBFS - Wii only===
* '''Archive-quality dump?''' Not directly, see note about reversing.
* '''Gain:''' Immediate (ISO dump size lowers). Considerable, depending on the game.
* '''Tools Used:''' [http://www.wiibackupmanager.co.uk/downloads.html Wii Backup Manager] (after adding your game, go to "Transfer" and select "WBFS") or [https://wit.wiimm.de/ wit (Wiimms ISO Tools)].
* '''Can be reverted?''' Maybe. WBFS files can always be converted back to ISO, but they will remain scrubbed (can be unscrubbed with NKitRestore) and, depending on settings at the time of conversion to WBFS, may be missing update/extras partitions (can be laboriously readded with wit and a copy of the missing data).
* '''Playable on Hardware?''' Yes!! WBFS dumps are playable on Wii.- Preferred format by most SD/USB loaders
* '''Playable on Emulators?''' Yes - Dolphin
* '''Tools Used:''' Wii Backup Manager (same as above, but select "CISO" - possibly Wii only), wit
* '''Can be reverted?''' Maybe. CISO files can always be converted back to ISO, but they will remain scrubbed (can be unscrubbed with NKitRestore).
* '''Playable on Hardware?''' Yes (on Wii only) - Nintendont for Gamecube games, uLoader for Wii games
* '''Playable on Emulators?''' Yes - Dolphin
