The free Terraria seed viewer: open a supported local Terraria .wld file to read its embedded seed, world size, difficulty, evil type, and file version without uploading the save.
Terraria tools
Terraria Tools
Free browser tools for Terraria creators: seed viewers, world map viewers, and character editors that run entirely on your device.
More tools
The free Terraria map viewer: open local Terraria .wld world files, inspect parsed 2D maps, zoom exploration areas, and export high-resolution PNGs with no server upload.
The free Terraria character editor: open and edit local .plr saves in your browser. Modify appearance, health, mana, and inventory slots with instant safe export and backups.
Calculate how much damage your Terraria defense blocks in Classic, Expert and Master mode.