Changes

* '''Archive-quality dump?''' No (destructivedata removed)

* '''Tools Used:''' NDSTokyoTrim (GBA/DS/3DS), rom_tool (3DS), GodMode9 (can directly dump DS/3DS cards in trimmed format)<br />NDSTokyoTrim: Drag-and-drop roms, and press "Trim". The original file will be overwritten! * '''Can be reverted?''' No. Sometimes it damages Some GBA/DS games may be broken by meaningful data at the game's functionality irreversiblyend of the ROM being mistaken for padding.

While Trimming involves deleting bytes from the end of the ROM up to until the first different one. However, with no mandatory allocation table, it doesn't affect s not intrinsecally possible to identify the true end of the gameused area, and therefore some GBA/DS games can be broken by naive automated trimming (for example Golden Sun DS). ===CIA (CTR Importable Archive, 3DS and DSiWare only)===* '''Archive-quality dump?'''s functionality by much other than being No (data removed and edited), compared to a gamecard dump. Potentially most accurate format for CDN (digitally distributed) titles.* '''Gain:''' Immediate (smaller regular than original ROM- not applicable to digital titles).* '''Tools Used:''' GodMode9 (can directly dump 3DS cards or installed titles to CIA, as well as converting 3DS to CIA), 3dsconv or 3DS Simple CIA Converter 5.0+ (3DS rom to CIA); makerom (3DS to/from CIA, itNCCHs/DSiWare/ELF+RSF to 3DS/CIA), make_cia (DSiWare to CIA)* '''Can be reverted?''' No, if starting from a gamecard dump (update partitions removed, main content's not advisable though ExHeader modified to change the media type from CARD/NAND to trim in many casesSD Application)* '''Playable on Hardware?''' Yes, including GBA games in generalafter installation. Rebuilding * '''Playable on Emulators?''' Yes? Official Nintendo format for developers to install digital titles, later became the internal structure most popular format for installable homebrew and game backups owing to the relatively low marketshare of flashcards and emulators (and, for the rom might even destroy the gameformer, strong impopularity) in favor of CFW.  ===NCCHs (CXIs and CFAs, 3DS only)===* '''Archive-quality dump?''' No (partition table/ticket/signatures... removed), compared to CCI/3DS and CIA* '''Gain:''' Immediate (smaller than original ROM - not applicable to digital titles).* '''Tools Used:''' GodMode9, ctrtool, ...* '''Can be reverted?''' No (result will be unsigned)* '''Playable on Hardware?''' Not really, unless packaged back into a CIA or 3DS.* '''Playable on Emulators?'''s functionality in Yes 3DS and CIA files, as well as already installed digital titles, are comprised of one or more NCCHs (also called "partitions" or "contents"): the few games where it does matter main content (number 0) can either be an executable CXI for example Golden Sun DS)software, or a non-executable CFA for a data title. Additional CFAs may be present, [https://www.3dbrew.org/wiki/NCSD#Overview with conventional index numbers]. [[Citra]] can run CXIs directly.