Private by design
The GLB is read in your browser and never uploaded, so unreleased products and client models stay with you.
GLB Viewer
Open GLB and glTF files with their textures, then check size and print readiness. Draco supported, nothing uploaded.
Loading 3D preview
Drag to rotate
Open a file to see its size, triangle count and whether it is watertight.
Opened in your browser. Files are never uploaded.
Continue with your GLB
Pick the next tool for what you want to do with the model.
How to view a GLB file online
Open the file, look at it as designed, then see how it would print.
- 1
Open the GLB
Drop a .glb, or a .gltf with embedded data. Draco and meshopt files decode automatically.
- 2
Look around
Orbit and zoom with textures on, or switch materials off to see the print preview.
- 3
Print it if you like
Download it as an STL in millimeters, upright and ready for your slicer.
Why use this GLB viewer
The model with its textures and the numbers a printer needs, in one place.
Textures on or off
Show original materials draws the colors and textures stored in the file. Turn it off to see the single plain mesh a slicer would get.
Real size
Converted from glTF meters to millimeters, so you know how big a print would be.
Watertight check
Open and non-manifold edges that would trip up a slicer if you printed it.
Volume and filament
Volume and an estimate of the PLA it would take to print solid.
Wireframe view
See every triangle. AI generated GLBs are often far denser than a print needs, and the wireframe shows where.
What's inside a GLB file
Four facts about the format explain most of what you see in the viewer.
glTF in one binary file
A GLB is a short header, a JSON chunk that describes the scene and a binary chunk with the geometry. One file, so nothing gets lost when it is shared.
Textures travel inside
Images are usually stored in the binary chunk too. That is why a GLB keeps its textures where a .gltf with separate image files loses them.
Meters, with Y up
glTF measures in meters with Y pointing up. Printers expect millimeters with Z up, so the viewer converts both before it shows the size.
Rigs and animation
A GLB can hold skeletons and animation clips as well as meshes. The viewer shows the model standing still and does not play animation.
Who uses a GLB viewer
GLB files come from AI tools, web projects and game assets. These are the people who open them.
AI 3D model makers
Check a model from an image to 3D generator for size, holes and density before you print or publish it.
Web and AR teams
Review a product or scene GLB on any computer before it goes into a web page, a model viewer or an AR app.
Makers printing game models
Open a download from Sketchfab or a game asset pack and see whether it would print before converting it to STL.
Anyone sent a GLB
Open a model a colleague or client shared without installing Blender, on Windows, macOS, Linux or a Chromebook.
GLB viewer questions
Answers about the format, textures, .gltf files, privacy and printing.
What is a GLB file?
GLB is the binary form of glTF, a 3D format for the web and AR. It packs geometry, textures and animation into one file, and most AI 3D generators export it.
Does the viewer show textures?
Yes. Materials and textures are shown as stored in the file. Switch them off to see the plain print preview.
Can I open a .gltf file?
Yes, if its data is embedded. A .gltf that references separate .bin or image files needs to be exported as a .glb first.
Is my model uploaded?
No. The GLB is opened in your browser and stays on your device. Only the Draco decoder, which is code, is fetched if the file needs it.
Can I 3D print a GLB?
Yes. Use Download STL here, or the GLB to STL converter, then slice it. Check the watertight result first, especially for AI-generated models.