What is an NBT structure viewer?
Minecraft's structure block saves a selected region as a .nbt file — the vanilla container for blocks, blockstates, and block entities. It's the format behind data-pack structures, jigsaw worldgen pieces, and anything you save and load with a structure block in-game.
An NBT viewer lets you open those files without loading a world or installing an NBT editor. Drop one into your browser and Shulkr renders the structure in 3D with full per-block detail — stair and slab orientations, waterlogged variants, redstone components, and block entities like chests and signs all placed exactly as the structure block would paste them.
Structure-block workflow
Structure files live under saves/<world>/generated/<namespace>/structures/ for worlds, or in a data pack's data/<namespace>/structures/. Pull the .nbt straight from either location and preview it before you place a single structure block.
When this is useful
- Inspecting a downloaded data pack's structures before adding it to a world.
- Checking a jigsaw or worldgen piece's exact blocks while building custom generation.
- Sharing a structure-block save with someone who isn't at their Minecraft PC.
- Counting blocks and estimating materials with the built-in area-measure tool.
Shulkr is fully client-side — your .nbt file is parsed and rendered entirely in your browser and never leaves your device.