FBX and GLB viewer online: skeleton, animations and real scale
Open an FBX, GLB or glTF file and this free viewer shows the model with its bone tree, plays its animation clips, and reads what a game import cares about: which skeleton it has (UE5 Manny, Mixamo or other), how long each clip is and whether it moves, the vertex and triangle counts, the materials and textures, and the height in metres. No account needed.
Drop an FBX, GLB or glTF file here
Binary or text FBX, a .glb, or a .gltf with its data embedded. Up to 150 MB.
Your file stays on your device: it is opened in this browser tab and never uploaded.
What it shows
- The model in 3D, in metres on a 1 m grid at the origin, with its bones drawn on top when you switch them on.
- The bone tree, each bone tagged with its UE5 Manny counterpart where there is one, and the skeleton named: UE5 Manny names, Mixamo or another naming, read the way the free UE5 skeleton checker reads it.
- Every animation clip: play, pause and scrub, with its length, the frame rate read from its keys, the number of frames and animated bones, and whether it moves the character or stays in place.
- Vertex and triangle counts, for the whole file and per mesh kind: skinned or not.
- The materials, and the textures inside the file with their pixel sizes.
- The height in metres: glTF is in metres by definition; an FBX states its unit, or centimetres are assumed when it does not.
It shows the file as three.js reads it in your browser. Meshes compressed with Draco or KTX2 are not drawn (their skeleton and height are still read), textures kept in separate files show as a plain colour, and no viewer can promise how an engine will import a file.
Questions
Is my file uploaded?
No. The file is read and drawn by this page in your browser tab and is never sent anywhere. If you accepted analytics, the page counts the file's format, the kind of skeleton and how many clips it has, never the file name or any name inside it.
Can I play the animations in an FBX online?
Yes. Every clip in the file is listed: pick one to play it, pause it, or drag the slider to any frame. The panel gives each clip's length, frame rate and frames, and whether it moves the character or plays in place.
How do I see the skeleton of an FBX or GLB?
Switch on "Show bones" to draw the skeleton over the mesh, and open the bone tree to read every bone and its parent. The panel also says whether the bones use UE5 Manny names, Mixamo names or another naming.
Why does my model look huge or tiny?
Usually the unit. glTF is in metres; an FBX states its unit, usually centimetres. A character exported in the wrong unit reads as 100 times too tall or too short, and the height line says so. Fix the export scale (in Blender, the FBX or glTF exporter's scale) and open it again.
Which files can it open?
FBX (binary, or text FBX 7.0 or newer), GLB, and glTF with its data embedded in the one file, up to 150 MB. A .gltf that keeps its data in separate .bin files cannot be opened on its own; export a .glb instead.
My model has no skeleton or no animations. What now?
No skeleton: RigMaster rigs a humanoid GLB in your browser to the UE5 Manny skeleton, for 15 credits a rig. No clips: MotionSmith makes motion from a text prompt on the UE5 Manny skeleton, 4 takes for 5 credits, exported as an FBX for Unreal or a GLB for Blender and Godot; Unity export is not there yet. Eligible new accounts get 50 free signup credits.