LTB

Converted files land in Axiom's own blueprint folder, ready to open without a separate export step. The conversion takes a couple of clicks in the GUI. Players who build with Litematica, edit a paste with Axiom, and move between the two no longer need a manual step in the middle.

Block entities such as chests and signs carry over during conversion, and entities including mobs, item frames and armor stands are converted as well. A .litematic file that contains several Litematica regions must be merged into a single region in Litematica first, because LTB handles one region per file. The file picker is the native dialog of the operating system, so its appearance depends on the platform.

The mod is built against 1.21.5 and relies on the Minecraft NBT API, which stays stable across the 1.21.5 – 1.21.11 range. Its published files cover the 1.21.4 – 26.2 versions listed in the game versions. It requires Fabric API and works with Litematica and Axiom, which are recommended but not required; the conversion itself runs without either mod active, since LTB reads and writes the files on its own. LTB is client-side only, so servers do not need it, and it is released under the MIT License without being open source.