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3D Post Facebook | 3D Post is a new Facebook feature. Users can upload 3D models directly and rotate them in 3D right in the post…
- 3D scanning a Honda motorcycle engine with the EinScan Pro Plus.
- Printing an iPhone case on the Cubicon Style 3D printer.
- Using 3D printers and 3D scanners to restore everyday items.
3D Post Facebook – How to Create and Share a 3D Post on Facebook:
Have a GLB file ready (how to make one is explained below). On desktop, drag and drop the GLB file into the Facebook post composer, then wait for Facebook to load the 3D model. Keep in mind:- The file must be under 3 MB!
- GLB format
- No texture or geometry errors
- Animations are not supported
- Model positioning: Z axis
- FBX, OBJ and DAE are not supported! Facebook only supports glTF 2.0 and later!
How to create a 3D file for a Facebook 3D post:
Or, more precisely, how do you create a *.glb file to upload to Facebook? To make a 3D post you need a GLB file, and to make a GLB file you need a 3D model. You can get a 3D model in these ways:- Model it yourself in dedicated software such as 3ds Max, Modo, Blender or SketchUp
- 3D scanning: scan an existing object
- Download free OBJ or STL 3D files online and convert them to GLB.
Contact CT3D Group
CT3D Group – professional 3D printing, 3D scanning, design and rapid prototyping services nationwide.
- CT3D Thu Duc – Ho Chi Minh City, Hanoi, Hai Phong: in3d.edu.vn – Hotline 0975 008 728 (Mr. Thai)
- CT3D District 6 – Ho Chi Minh City: 3dmaker.vn – Hotline 038 7798308 (Mr. Phuc)
What are GLB and glTF, and why are they so popular?
glTF (GL Transmission Format) is an open format for transmitting and displaying 3D models on the web and in mobile apps. GLB is the binary version of glTF and packs all the geometry, materials and textures into a single file. Because it is light, loads fast and is supported by many platforms, GLB has become a common format for showing 3D products, not only on social media but also on online stores, augmented reality (AR) apps and online 3D viewers.
- A single file: no lost textures, unlike sharing an OBJ with several image files.
- PBR material support: metal, plastic and wood look fairly realistic under lighting.
- Broad compatibility: Blender and many other 3D programs can now export GLB directly.
How to optimize a 3D model before sharing it online
Models from 3D scanners or detailed designs are often very heavy and need optimizing before you post them to platforms with file size limits:
| Step | Purpose |
|---|---|
| Reduce polygon count (decimate, retopology) | Cut file size while keeping the overall shape |
| Compress and downsize textures | Texture images usually make up most of the file size |
| Bake detail into a normal map | Keep the look of surface detail on a simplified mesh |
| Set the origin and axis orientation | The model shows in the right pose and rotates around its center |
| Check in a glTF viewer | Catch material errors and flipped faces before posting |
Note that each social network’s features, size limits and supported formats can change over time, so check the platform’s latest guidelines before posting.
Getting a 3D model from a real product
For businesses that want to show real products in 3D, the fastest way is to color 3D scan the product and optimize it into a GLB file. This keeps the real colors and materials, which are hard to achieve with manual modeling. If you don’t have the equipment, you can use a product 3D scanning service to get models for your website, catalog or AR app.
Frequently asked questions
Where else can GLB files be used besides social media?
GLB is widely used on e-commerce websites, online 3D viewers, augmented reality apps and product presentation tools. Many modern browsers can display GLB through web libraries such as model-viewer or Three.js.
How do I convert an OBJ or STL file to GLB?
A common way is to import the file into Blender and export it as binary glTF 2.0 (.glb). STL files have no color, so assign materials before exporting if you want the model to look good.
Are 3D scanner models too heavy to post online?
Usually yes, because scan data can contain millions of triangles. Reduce the polygon count and compress textures before exporting to GLB so the file is light and loads quickly on phones.
Why does my GLB model show up black or lose its color?
Common causes are textures not packed into the file, flipped mesh normals, or material settings that aren’t compatible with glTF. Checking the file in a glTF viewer before posting helps you catch these early.
Related services at CT3D Group
- On-demand 3D printing service
- 3D scanning service – high-accuracy 3D scanning
- Custom 3D design service
- CT3D Group network: ct3dgroup.com · in3d.edu.vn – Hotline/Zalo 0975 008 728
