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Almighty/Mixamo to GLB

Free browser tool

Mixamo to GLB, every animation in one file.

Select a Mixamo character together with its animation FBX files and get one GLB for three.js, Babylon.js or any glTF engine: the character once, every animation as a clip named after its file. It runs in your browser and your files never leave your device.

Your model, on the stage

GLB, glTF, FBX, OBJ, STL or a .zip · Up to 150 MB · No upload

Drop a model to convert it.

A .glb, .gltf, .fbx, .obj or .stl, with its textures (or the whole folder). Check it in 3D, then download it in the format you need.

Your files stay in this browser tab.

Open a .glb, a .gltf with its files, an .fbx, .obj or .stl, or a .zip of any of them. Select it together with the files it uses (a .gltf's .bin, an .obj's .mtl, textures), or drop the whole folder. A Mixamo character's FBX selected together with its animation FBXs becomes one GLB with every animation. Files are neither uploaded nor saved. Closing the model or leaving this page releases them.

Create a model in the studio →

How it works

  1. Select the character's .fbx and all its animation .fbx files together, or drop their folder or a .zip of them.
  2. The character opens in 3D. Pick each animation from the menu to check it plays; the report lists the clips by name.
  3. Download the GLB. Too heavy for the web? Compress it right there; the skeleton and every clip are kept.
A single FBX, from Mixamo or anywhere else? The FBX to GLB converter takes one file. The GLB compressor makes a character lighter and keeps its animations. No character yet? Almighty turns a sentence into a textured 3D model.

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Questions

How should I download from Mixamo?
Download the character once as FBX Binary, With Skin (the T-pose is fine). Then download each animation for that same character as FBX Binary; Without Skin keeps those files small, and With Skin works too (only the animation is taken from them). Name each file after its animation, such as Running.fbx: Mixamo calls every clip "mixamo.com", so the clip takes its file's name instead.
What is in the GLB?
The character once (mesh, skeleton, skin and textures) and one animation clip per animation file, named after the file. A Mixamo character with four animations (idle, run, walk, dance) became one GLB with its 65 bones and four named clips, which the Khronos glTF Validator reads with no errors.
Do the animations play exactly as in Mixamo?
Each clip's bone rotations are kept as Mixamo wrote them, and the hips' travel is scaled to the character, so root motion is kept. Played in three.js, every joint of the merged clips landed within 0.3% of the hips-to-head length of the same animations played from the original FBX files with three.js's FBXLoader.
How do I play the clips in three.js or Babylon.js?
In three.js, load the GLB with GLTFLoader, make an AnimationMixer for gltf.scene and play AnimationClip.findByName(gltf.animations, "Running"). In Babylon.js, load it with ImportMeshAsync and start scene.getAnimationGroupByName("Running"). Both find the clip by the name of the file it came from.
Can I convert an animation without the character?
Yes. An FBX downloaded Without Skin opens on its own and is shown on a stick figure of its skeleton; its GLB holds the skeleton and the clip, which three.js can play on a character with the same bone names. For one self-contained file, open it together with the character.
What if an animation was made for another character?
Clips are matched to the character by bone name, and Mixamo gives every character it rigs the same bone names, so its animations fit any Mixamo-rigged character. A file whose bones mostly have other names was made for another skeleton: it is left out and named. Up to 60 files at a time.
Is anything uploaded?
No. The FBX files are read and the GLB written by your own browser, in the background of this tab. Nothing is sent to a server or stored.
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