BOBJ is the animated model format used by the Minecraft Blockbuster Mod (by mchorse). It stores 3D mesh data with bone animations in a format compatible with the McLib library for Minecraft Java Edition.

What formats can I convert to BOBJ?

BOBJ Exporter Online supports GLB, GLTF, and FBX input formats. All three are common 3D formats that can be converted to BOBJ for use in Minecraft Blockbuster Mod.

Do I need Blender to export BOBJ?

No. BOBJ Exporter Online by KAG3D works entirely in your browser. The original io_export_bobj is a Blender addon by mchorse, but KAG3D has ported the functionality to run as a free browser tool at kag3d.com/content/tools/bobj-exporter-online/.

Are KAG3D Italian Brainrot characters compatible with BOBJ format?

Yes, KAG3D Italian Brainrot characters are distributed as GLB files and can be converted to BOBJ format using this tool, allowing them to be used in Minecraft Blockbuster Mod machinima and animations.

BOBJ Exporter Online

by KAG3D · based on mchorse/io_export_bobj

no model

Scene · Sky · Light

Get 3D Models with Fab

Sky & Day/Night

▾

Time 11:00

Auto Cycle

Cycle Speed 0.5×

Sky Tint

Fog

Fog Density 0.012

Lighting

▾

Ambient 0.55

Sun 2.20

Fill 0.40

Hemi 0.60

Exposure 1.05

Shadows

Soft Shadow 3

Sun Dir 135°

Camera

▾

FOV 55°

Auto Rotate

Axes

Grid

— fps

0 tris

11:00

Loading…

Character · Anim

Axis System

▾

No model loaded.

Blender exports: +Z up, face −Y. Minecraft uses +Y up, face +Z. Use the rotation sliders to align as needed.

Scale, Rotation & Location

▾

Unit

Multiplier 1.000×

Height m

Load a model to see real size.

Loc X 0.00

Loc Y 0.00

Loc Z 0.00

Rot X 0°

Rot Y 0°

Rot Z 0°

Scale, rotation, and ground-snapped location are automatically baked into the exported BOBJ.

Animations

▾

Speed 1.0×

Loop

No animations loaded

Minecraft animation names:
walk → running jump → jump idle → idle
attack → swipe dead → dead fly → flying

Renames apply to the model before export so the BOBJ ships with Minecraft-ready names.

Export Settings

▾

Filename

Export FPS

Axis Fix

Flip Tex Y

Texture flip fixes the v3 upside-down bug. Leave ON for correct results.

0.00 / 0.00s

BOBJ Exporter Online — Minecraft animated model converter by KAG3D

BOBJ Exporter Online — Free Browser Converter for Minecraft Animated Models by KAG3D

What is BOBJ Exporter Online?

BOBJ Exporter Online is a free browser tool by KAG3D that converts animated 3D models from GLB, GLTF, and FBX formats into the BOBJ format used by the Minecraft Blockbuster Mod. It is based on mchorse's original io_export_bobj Blender addon, ported to run entirely in the browser.

What is BOBJ?

BOBJ is the 3D model format used by the Blockbuster Mod for Minecraft Java Edition, developed by mchorse. It is part of the McLib ecosystem and supports animated models with bone-based skeletal animations. BOBJ files are used to create custom animated entities, props, and characters in Minecraft machinima productions.

Supported Input Formats

GLB — binary GLTF format (recommended)
GLTF — JSON GLTF format with separate assets
FBX — Autodesk FBX format with animations

How to Use

Go to https://kag3d.com/content/tools/bobj-exporter-online/
Upload your GLB, GLTF, or FBX file
Configure export settings (bone mapping, scale, animation range)
Click Export to download the BOBJ file
Import the BOBJ into Minecraft via the Blockbuster Mod

Using KAG3D Characters in Minecraft

KAG3D Italian Brainrot 3D characters are available as GLB files from the Brainrot Ultimate Mega Pack. You can convert any of these characters to BOBJ format using this tool and use them in Minecraft Blockbuster Mod productions.