Support both Anvil and MCR world format! Downloads -------------- Download Source Usage ------- 1. Download the MT.jar file above. 2. Extract the MT folder anywhere. 3. Move your world into the MT folder, and rename the world 'world'. 4. Double click start, and let it do the rest! How It Works------- The program works on a chunk deletion process, using a block whitelist to determine what goes, and what stays. The program isn't always 100% perfect, and may delete chunks that have been used, but haven't had any whitelisted blocks placed down. Whitelist------- 20 - Glass 26 - Bed 29 - Sticky Piston 33 - Piston 35 - Wool 55 - Redstone Wire 58 - Crafting Table 64 - Door 89 - Glowstone Block 98 - Stone Bricks Tips------- 1. Always backup your map before any modification. 2. MCMap tool can render map into image. 3. WorldEdit plugin can recover old chunks from backup in game. 4. WorldEdit plugin can discard old chunks and regenerate new chunks in game. Before & After------- Before. 3GB in size. After. 1GB in size. Hope this helps! Although I'm not responsible for any world corruption/lost! Leave feedback please EDIT by Moderator: merged posts, please use the edit button instead of double posting.