See also: tEdit Wiki.

tEdit is an open source world editor with Paint-like functionality. It is capable of editing world files in many ways, ranging from basic terrain work to world status editing. TEdit officially supports Terraria 1.3 worlds with the most recent beta release.

Terraria - Mod Feature - TEdit 3

Terraria - Mod Feature - TEdit 3

Installation and Use

  1. Back up your world and player files (recommended).
  2. Download the latest release.
  3. Run the TEdit executable. On the menu, go to File > Open.
  4. Navigate to Documents\My Games\Terraria\Worlds. This folder contains your world files, which are opened directly using tEdit.