How many models at once?

Up to 300 models and 150 MB in all: drop a folder, choose several files, or drop the .zip a pack came in. Each model opens on its own, so you can look at any of them before converting, and one that cannot be read is listed with the reason while the rest go ahead.

How long does it take?

Seconds for most packs. Kenney's Food Kit, a .zip of 600 files that holds 200 models as GLB, FBX and OBJ, opened as 200 models in under a second and became 200 STLs in 33 seconds; 20 of its FBX models became GLBs in 24 seconds, and 20 of its OBJs became 3MFs in 4. FBX and OBJ take longer than GLB because each is converted first.

What if the pack has every model in several formats?

Packs such as Kenney's ship each model as GLB, FBX and OBJ. Each model is converted once, from its most direct format (GLB, then glTF, FBX, OBJ, 3MF, STL), so the result holds one copy of each, never three.

Do the textures come along?

Yes. Each model finds the files it names in its own folder or the folder above it, where packs keep a shared texture. A GLB that names its texture as a file beside it, as every Kenney GLB does, is packed whole with it, losslessly.

What about a Mixamo character and its animations?

Several FBX files that are one character and its animations are not a batch: they become one GLB with every animation. The Mixamo to GLB page explains how.

One .zip with every converted model in the folders it came from, each with its new extension: a GLB, a smaller GLB (about 100,000 triangles, 1K WebP textures and Draco geometry), an STL or 3MF for printing at real size or a length you choose, or an OBJ with its .mtl and textures in a folder of its own.

Is anything uploaded?

No. Every model is read and written by your own browser, one after the other, in the background of this tab. Nothing is sent to a server or stored.

Free browser tool

Batch 3D model converter.

Convert a whole folder or asset pack at once: FBX, OBJ, STL, 3MF, glTF and GLB models to GLB, STL, 3MF, OBJ or smaller GLBs, downloaded as one .zip that keeps the folders. It runs in your browser and your files never leave your device.

Your model, on the stage

GLB, glTF, FBX, OBJ, STL, 3MF or a .zip · Up to 150 MB · No upload

Drop a model to convert it.

A .glb, .gltf, .fbx, .obj, .stl or .3mf, 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, .stl or .3mf, 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. Several models at once (an asset pack's folder or .zip) are converted or made smaller together and download as one .zip. Files are neither uploaded nor saved. Closing the model or leaving this page releases them.

Create a model in the studio →

How it works

Drop the folder or the .zip (or choose several files). Every model opens on its own; select one to see it in 3D.
Choose what to make of every model: GLB, a smaller GLB, STL, 3MF or OBJ, and convert.
Download the .zip: every model in its folder, with its new extension.

One model at a time? Each format has its own page: FBX to GLB, GLB compressor, GLB to STL and the rest, and every one of them takes several models at once too.

More free 3D file tools

Questions

How many models at once?: Up to 300 models and 150 MB in all: drop a folder, choose several files, or drop the .zip a pack came in. Each model opens on its own, so you can look at any of them before converting, and one that cannot be read is listed with the reason while the rest go ahead.
How long does it take?: Seconds for most packs. Kenney's Food Kit, a .zip of 600 files that holds 200 models as GLB, FBX and OBJ, opened as 200 models in under a second and became 200 STLs in 33 seconds; 20 of its FBX models became GLBs in 24 seconds, and 20 of its OBJs became 3MFs in 4. FBX and OBJ take longer than GLB because each is converted first.
What if the pack has every model in several formats?: Packs such as Kenney's ship each model as GLB, FBX and OBJ. Each model is converted once, from its most direct format (GLB, then glTF, FBX, OBJ, 3MF, STL), so the result holds one copy of each, never three.
Do the textures come along?: Yes. Each model finds the files it names in its own folder or the folder above it, where packs keep a shared texture. A GLB that names its texture as a file beside it, as every Kenney GLB does, is packed whole with it, losslessly.
What about a Mixamo character and its animations?: Several FBX files that are one character and its animations are not a batch: they become one GLB with every animation. The Mixamo to GLB page explains how.
What comes out?: One .zip with every converted model in the folders it came from, each with its new extension: a GLB, a smaller GLB (about 100,000 triangles, 1K WebP textures and Draco geometry), an STL or 3MF for printing at real size or a length you choose, or an OBJ with its .mtl and textures in a folder of its own.
Is anything uploaded?: No. Every model is read and written by your own browser, one after the other, in the background of this tab. Nothing is sent to a server or stored.