An inventory editor is a third-party program that allows you to add or remove items from your local character inventory, and in many cases, edit other character data. inventory editors are primarily designed for the desktop version of terraria. see guide:mobile inventory editing for methods of inventory editing in the mobile version.. How to use terraria inventory editor (and how to download it) by joebertt. or stealing and ruining the game for others. terraria inventory editor is basically just a creative mode, like in minecraft. so i hope this helps! rate . favorite. favorited. (also make sure you click the save player button and not the save as button here is the. Download (7.20 mb) after downloading .zips file rename the file to .zip and open it with any compression program.