# Rig Bake

> Rig Bake (rigbake.com) is a free, browser-based rig, skeleton, animation and VFX toolkit for 3D models — purpose-built for repairing AI-generated models (Meshy AI, Tripo, Rodin, Luma AI, Sloyd, CSM) and baking them into game-ready 2D spritesheets. Everything runs client-side in WebGL 2; models are never uploaded to a server. No sign-up required; free tier has no watermark.

Key facts:
- Imports: .glb / .gltf (≤100 MB, DRACO & Meshopt supported) and .fbx (≤200 MB)
- Exports: .glb (scene, per-clip, LOD chain, per-mesh), .stl (3D print, watertight report), skeleton .json, PNG spritesheets + metadata.json, frame zips, GIF, MP4, transparent WebM (VP9 alpha), Unity package (sliced PNG + .meta, Sprite-Lit normals), Godot package (SpriteFrames .tres, Light2D normals), Vertex Animation Textures, octahedral impostor atlases, sprite stacks
- Spritesheet presets: sidescroller (4 directions), isometric (8 directions), top-down; extra passes: normal map, 16-bit depth, emissive, ground shadow, team-color mask, motion vectors, outline, six-way lighting
- Pricing: Free ($0 — 32 frames/direction, 256 px cells, 1 emitter, all export formats, no watermark); Pro ($19/year — 128 frames, 1024 px cells, 10 emitters, batch bake)
- Privacy: all processing is local in the browser; no model upload

## Features

- [Fix AI-generated 3D model rigs](https://rigbake.com/features/fix-ai-generated-3d-model-rigs/): Detects and repairs common defects in AI-generated 3D models (wrong scale, inverted normals, broken bind poses, duplicate vertices, holes, messy skin weights) from Meshy AI, Tripo, Rodin and others. Free, browser-based, no upload.
- [Turn 3D models into 2D spritesheets](https://rigbake.com/features/3d-model-to-spritesheet/): Bakes animated 3D models (.glb/.gltf/.fbx) into 2D spritesheets from sidescroller (4-dir), isometric (8-dir) or top-down views, with normal/depth/emissive/team-color passes and PNG, GIF, MP4, transparent WebM, Unity and Godot outputs.
- [Animation retargeting & bone mapping](https://rigbake.com/features/animation-retargeting/): Transfers animation clips between different skeletons with automatic bone-name mapping (Mixamo, Bip01, Armature prefixes handled) plus a manual mapping editor. Import from .glb/.gltf/.fbx, export retargeted clips to .glb.
- [Edit animation clips in the browser](https://rigbake.com/features/animation-clip-editor/): Frame-accurate browser editor for animation clips in .glb/.gltf/.fbx: crop, split, reverse, duplicate, de-jitter, playback speed and loop control, root-motion lock, per-clip .glb export.
- [Browser-based cloth simulation](https://rigbake.com/features/cloth-simulation/): Position-based cloth simulation for any mesh with gravity/wind/stiffness controls, brush-painted pinning, UV/plane/grid flattening and decimation tools; results can be baked to spritesheets.
- [Particles, fire, lightning & shader effects](https://rigbake.com/features/vfx-particles-fire-lightning/): VFX components attachable to any object: GPU Navier-Stokes volumetric fire, spline lightning with branching, particle emitters with custom sprites and clip-scoped emission, dissolve, refraction cloak, outline and heat haze — all bakeable to spritesheets/WebM.
- [Turn 3D models into pixel art](https://rigbake.com/features/pixel-art-from-3d/): Real-time 3D-to-pixel-art rendering: pixelation, palette quantization (PICO-8, NES, Game Boy, CGA, DawnBringer, custom GIMP/.hex/Lospec palettes), dithering, toon shading, reorderable post chain; bakes consistent retro spritesheets.
- [One-click Unity & Godot sprite packages](https://rigbake.com/features/unity-godot-spritesheet-export/): Exports engine-native sprite packages: Unity sliced PNG + .meta with Sprite-Lit normal-map binding, and Godot SpriteFrames .tres wired for Light2D; plus plain PNG+JSON, frame zips, GIF/MP4/transparent WebM.
- [Advanced real-time exports: VAT, impostors & sprite stacks](https://rigbake.com/features/advanced-exports-vat-impostor-sprite-stack/): Bakes Vertex Animation Textures (2–256 frames, optional normals) for GPU crowds, octahedral impostor atlases (up to 32×32 views, hemisphere/sphere, normal+depth) for LOD billboards, and 2–128-layer sprite stacks for GameMaker/PICO-8 fake 3D.
- [Export 3D models for printing (.stl)](https://rigbake.com/features/3d-print-stl-export/): Converts .glb/.gltf/.fbx (including posed animation frames) to slicer-ready STL: millimeter size presets (25–200 mm), Z-up, weld/degenerate/island cleanup, and a live printability report with watertight verdict.
- [Generate LOD chains from any model](https://rigbake.com/features/lod-generator/): One-click LOD chain export: LOD0/LOD1/LOD2 at 100%/50%/25% triangles via meshoptimizer quadric decimation, with skeleton, skin weights and animation clips preserved; zipped .glb output.

## Guides

- [Fix a broken Meshy AI rig](https://rigbake.com/guides/fix-meshy-ai-rig/): Step-by-step fix for broken Meshy AI exports: exploded mesh = bind-pose rebind, wrong size = unit normalization, inside-out = normal flip, twisting joints = weight cleanup, jitter = keyframe cleanup. Free, browser-based.
- [Fix a Tripo AI model](https://rigbake.com/guides/fix-tripo-ai-model/): Repairs Tripo AI exports in the browser: scale normalization, normal flipping, vertex welding, island removal, bind-pose rebuild; then clip editing, retargeting and .glb/spritesheet/STL export. Free.
- [Fix a Rodin AI model](https://rigbake.com/guides/fix-rodin-ai-model/): Geometry cleanup for Rodin/Hyper3D exports: UV-aware vertex welding, debris/island removal, hole closing, normal fixing — with original texture bytes preserved. Then LOD, STL or spritesheet export. Free.
- [Convert a GLB to a spritesheet](https://rigbake.com/guides/glb-to-spritesheet/): Four-step GLB→spritesheet conversion in the browser: import (≤100 MB, DRACO/Meshopt OK), pick sidescroller/isometric/top-down directions, set frames & cell size, export PNG+JSON / frames / GIF / MP4 / transparent WebM / Unity / Godot. Free, no upload, no watermark.
- [Convert an FBX to a sprite sheet](https://rigbake.com/guides/fbx-to-sprite-sheet/): Converts animated FBX (≤200 MB; Mixamo, Blender, AI generators) to 2D sprite sheets in the browser, with retargeting for extra clips, direction presets, and PNG/GIF/WebM/Unity/Godot export. Also works as a free FBX→GLB converter.
- [Retarget Mixamo animations to any character](https://rigbake.com/guides/retarget-mixamo-animations/): Retargets Mixamo FBX animations onto any rigged character in the browser: automatic mixamorig bone-name mapping, manual mapping dialog, copy-mapping-to-all-clips, then .glb or spritesheet export. Free.

## Optional

- [Full feature index](https://rigbake.com/features/): Hub page listing every feature and guide.
- [llms-full.txt](https://rigbake.com/llms-full.txt): Full text of all feature and guide pages in one markdown file.