What is a .prefab.json file?

It is Hytale's prefab format — a JSON description of positioned blocks using Hytale's block names — that you can import into a Hytale project.

Will every Bedrock block map to Hytale?

Common blocks map to a close Hytale equivalent. Blocks without a match are reported so you can review or replace them.

Can a Bedrock structure block open a prefab?

No. A .prefab.json is a Hytale format, not a Bedrock one. This route moves a Bedrock build into Hytale, not back into Bedrock.

Does redstone or entity data carry over?

No. A prefab captures blocks and their positions, not functional block behavior or entities.

Convert .mcstructure to .prefab.json

Bring a Bedrock structure into Hytale. Bloxelizer reads the .mcstructure blocks, maps them to Hytale, and exports a .prefab.json prefab.

Free & unlimited

Runs in your browser

3D & layer previews

Drop a Minecraft schematic

orBrowse

We'll detect the format, let you view your build layer by layer in 2D / 3D, and let you export it to any format.

.schem

.litematic

.bp

.mcstructure

.nbt

.schematic

.mcstructurezip

.mcworld

.zip(Java world)

.prefab.json

.json

.glb

.gltf

.obj

.mtl

.stl

.bbmodel

.geo.json

.png

.jpg

.jpeg

.webp

Or paste a URL

The .mcstructure and .prefab.json formats

The Bedrock .mcstructure format stores blocks as little-endian NBT with Bedrock identifiers and a separate liquid layer. A Hytale .prefab.json is Hytale's prefab format: a JSON list of positioned blocks referencing Hytale's block names. The conversion maps each Bedrock block to its closest Hytale equivalent and writes a prefab for a Hytale project.

How to convert .mcstructure to .prefab.json

Upload your Bedrock .mcstructure file in the converter below.

Check the Hytale block mapping in the 3D or layer preview.

Keep .prefab.json selected and download the Hytale prefab.

When to use this conversion

Use this route to move a Bedrock build into a Hytale build or map project as a reusable prefab.

Compatibility notes

Minecraft and Hytale have different block sets, so each block maps to the closest Hytale match and some may have no exact equivalent. Review the preview and the missing-block report before using the prefab.