How to open a GLB file online
- Drop the .glb file into the box above or click Choose file.
- Drag to rotate, scroll or pinch to zoom, right-drag or two-finger drag to pan.
- Use the buttons for front / top / side views, wireframe and screenshots.
- Pick an output format on the right to convert and download.
What the viewer shows
- Dimensions of the bounding box (X × Y × Z).
- Triangle count and number of parts.
- Surface area and volume (for closed meshes).
- Watertight check – whether the mesh is closed, which matters for 3D printing.
About GLB files
GLB (binary glTF) was defined by the Khronos Group as the single-file binary form of glTF 2.0. It packs meshes, PBR materials, textures, scene hierarchy and animations into one compact file. It is the standard for 3D on the web, AR viewers, e-commerce product views and game engines.
Desktop programs that open GLB
- Blender (File → Import → glTF 2.0)
- Windows 3D Viewer
- Unity and Unreal Engine (with importers)
- any website using three.js or
Frequently asked questions
Is the viewer free?
Yes – viewing is free and unlimited, without an account. Converting and downloading is free for up to 3 files a day; Pro removes the limit.
Is my file uploaded?
No. The file is read by your browser and rendered with WebGL on your device. It is never sent to a server.
Does the viewer play animations?
Yes, the first animation in the file plays automatically.
Does it work on iPhone and Android?
Yes. Open the page in Safari or Chrome, tap Choose file and pick the model from Files or Downloads.