TXD files are RenderWare compression texture archives with the .txd extension which are used by Grand Theft Auto games from the GTA III Era to store images and other textures used throughout the game. A number of tools have been developed by members of the community to open .txd files and extract/replace the textures, allowing for the modification of the game's appearance. There is TXD Workshop which is developed by Delfi and then there is Magic.TXD by DK22Pac and The_GTA. Some links to this and other tools are below. Most TXD files are stored inside the gta3.img archive.