GLB and glTF viewer
Drop a 3D file here
STL, 3MF, OBJ, PLY, GLB or G-code. The file opens in this browser tab and is not uploaded.
- File
- –
- Size (mm)
- –
- Volume
- –
- Triangles
- –
Measure it, cut a section, estimate the print
The free Extrude app does this on your phone, offline. Listed as “STL Viewer”.
What is a GLB or glTF file?
glTF is the standard format for 3D on the web and in AR. GLB is the same thing packed into one binary file, with textures inside.
A .gltf file often points to separate .bin and image files. Those need to be together to open; a GLB never has that problem.
How to use this viewer
- Drop the file on the dark area, or press Choose file.
- Drag to rotate, scroll or pinch to zoom, right-drag or two-finger drag to pan.
- Read the size, volume and triangle count under the view. Use Wireframe to see the mesh.
Opening GLB files on a phone
The app opens GLB and glTF on iPhone and Android, and shows them in augmented reality at their real size.
Questions
What is the difference between GLB and glTF?
They are the same format. GLB is one binary file with everything inside; glTF is JSON that can reference separate files.
Why does my .gltf fail to open?
It probably references a .bin or texture file that was not included. Use the GLB version of the model if there is one.
Is the file uploaded?
No. It stays in your browser.
Other viewers
Every page opens every format. These cover what is different about each one.