To convert glTF to GLB, choose your glTF 3D models above, adjust the options if needed and press "Convert to GLB". The GLB downloads instantly: free, with no sign-up, and the file never leaves your device.
About the glTF to GLB Converter
Need to turn a glTF file into GLB? This free converter changes glTF 3D models into GLB in a few seconds, right in your browser. People usually convert because many slicers and older 3D tools cannot import glTF, while GLB gives you a single-file GLB for web and AR. GLB files open in Blender, Windows 3D Viewer, Three.js, Babylon.js, Unity and model-viewer.
Models are loaded and exported with three.js, the most widely used open-source 3D library for the web. Because everything happens on your own device, your 3D models are never uploaded, stored or seen by anyone else, which makes it safe for client prototypes and unreleased product designs.
What to expect: geometry, normals and UV coordinates are converted, and the model is not rescaled.
How to use the glTF to GLB Converter
- Click "Choose files" or drag your glTF 3D models onto the box. You can add several at once.
- No settings are needed.
- Press "Convert to GLB". The conversion runs on your device and shows its progress.
- Download each GLB file, or use "Download all (ZIP)" when you converted several.
- Open the result in Blender or Windows 3D Viewer to check it; your original glTF is never changed.
Tips & benchmarks
- GLB packs geometry and materials into one file, ready for web viewers and AR.
- STL and OBJ files have no units; most slicers assume millimetres, so check the size after importing.
- Keep the file name simple (letters, numbers and hyphens) if you plan to upload the GLB to a website or government portal.
Frequently asked questions
How do I convert glTF to GLB?
Click "Choose files", select your glTF 3D models, adjust the options if you want, and press "Convert to GLB". The GLB downloads immediately; with several files you can download everything as one ZIP.
Is this glTF to GLB converter free and safe?
Yes. It is completely free, with no sign-up, no daily limit and no watermark. The conversion runs inside your browser, so your 3D models never leave your phone or computer and nothing is stored on News Appite's servers.
Are textures and materials kept?
Basic materials and vertex colours are carried over where both formats support them. External texture image files referenced by OBJ or glTF are not bundled unless they are embedded in the source.
Can I convert several glTF files at once?
Yes. Add as many glTF files as you like; they are converted one after another and you can download them individually or together as a ZIP.
Does it work on iPhone, Android and Mac?
Yes. The converter works in any modern browser, including Chrome, Safari, Edge and Firefox, on Android, iPhone, iPad, Windows, macOS and Linux. No app is needed.
What is the difference between glTF and GLB?
glTF (GL Transmission Format) is a JSON 3D scene best suited to inspecting or editing 3D scenes by hand and web 3D pipelines. GLB (Binary glTF) is a single-file 3D scene best suited to web 3D viewers, AR on Android and Facebook, Three.js and Babylon.js.
Is there a file size limit?
There is no upload limit, because nothing is uploaded. The practical limit is your device's memory: files of a few hundred megabytes work on most computers, and phones handle smaller files comfortably.
glTF ko GLB kaise kare?
Is page par "Choose files" dabaiye, apni glTF file chuniye aur "Convert to GLB" par click kijiye. GLB file turant download ho jaati hai. Ye bilkul free hai, sign-up nahi chahiye, aur aapki file kisi server par upload nahi hoti.
glTF vs GLB: format comparison
| glTF | GLB | |
|---|---|---|
| Full name | GL Transmission Format | Binary glTF |
| Type | JSON 3D scene | Single-file 3D scene |
| Created by | Khronos Group, 2015 (2.0 in 2017) | Khronos Group, 2017 (glTF 2.0) |
| Compression | JSON with binary buffers | Binary |
| File extension | .gltf | .glb |
| MIME type | model/gltf+json | model/gltf-binary |
| Best for | Inspecting or editing 3D scenes by hand and web 3D pipelines | Web 3D viewers, AR on Android and Facebook, Three.js and Babylon.js |
| Opens in | Blender, Three.js, Babylon.js, Godot, Unity (with plugins) and VS Code | Blender, Windows 3D Viewer, Three.js, Babylon.js, Unity and model-viewer |
What is a glTF file?
glTF is the Khronos Group's open standard for transmitting 3D scenes efficiently. The .gltf variant is human-readable JSON that describes meshes, materials, animations and cameras.
What is a GLB file?
GLB is the binary, single-file version of glTF 2.0, often called the "JPEG of 3D". Meshes, materials and textures are packed into one compact file that loads fast on the web, in AR and in game engines.
Need it the other way round? Use the GLB to glTF Converter.
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