TEdit

TEdit, short for Terraria Editor, is an open-source map and world editor for the sandbox game Terraria. It enables players to load Terraria world files (.wld and .twld), view their layout, and modify the world outside of the game. The editor provides a graphical interface for examining terrain, biomes, structures, and world metadata, and for making changes directly in the world data.

Key features include editing of tiles and walls, adjusting liquids, and configuring in-world objects such as chests and signs. It offers brushes, fill tools, and region selection for editing larger areas, as well as copy-paste functionality to duplicate sections. Users can change tile types, walls, and related properties, and save changes back to the world file. An option to export a visual map snapshot as an image is also available.

TEdit supports multiple Terraria world versions and sizes, preserving and exposing important world data such as world name, seed, spawn location, and other metadata. As a community-created tool, it is independent of the game's official editors and is maintained on platforms like GitHub.

Usage of TEdit is intended for players who wish to prepare or repair worlds, test layouts, or back up data. Because edits modify game data, users are advised to back up original files before making changes, and to use the tool responsibly to avoid corrupting worlds.