Nine formats, one viewer
GLB, glTF, STL, OBJ, FBX, PLY, 3MF, STEP and IGES all open here, so you do not need a separate app for each format.
Online 3D Model Viewer
Open GLB, glTF, STL, OBJ, FBX, PLY, 3MF, STEP and IGES files in your browser. Rotate the model, see its textures and check its real size. Nothing is 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.
Convert your model next
Checked the file? Turn it into the format your next app or printer needs.
How to view a 3D model online
Open the file, look at it from every side, then read the numbers.
- 1
Open the file
Drop a GLB, glTF, STL, OBJ, FBX, PLY, 3MF, STEP or IGES file, or several at once to switch between them.
- 2
Look around
Drag to orbit and scroll to zoom. GLB, glTF and FBX files show their own materials and textures.
- 3
Check the numbers
Read the size in mm or inches, the triangle count, the volume and the watertight result.
Why use this 3D model viewer
One page for the common 3D formats, with the checks that matter before you print or share.
Private by design
Models are read in your browser and never uploaded, so client work and unreleased designs stay on your device.
Materials and textures
GLB, glTF and FBX files show the colors and textures stored inside them. Switch them off to see the bare mesh.
Real size, any unit
glTF meters, FBX centimeters and the unit in a 3MF are converted, so every model reads in millimeters or inches.
Print checks included
Triangle count, volume, a PLA estimate and a watertight check for every file, before it reaches a slicer.
Wireframe view
Turn on wireframe to see how dense the mesh is and where the detail goes.
What each 3D file holds
The viewer opens nine file types, including STEP and IGES CAD files. What it can show depends on what each format stores.
GLB and glTF
The format for the web and AR. Geometry, materials and textures travel together, measured in meters. A .gltf must have its data embedded.
STL
Bare triangles with no color and no unit. It is what slicers read, so the viewer treats its numbers as millimeters.
OBJ
Plain text geometry that almost every 3D program exports. Colors live in a separate .mtl file, so the viewer shows the shape.
FBX
Autodesk's format for games and animation. Version 7 files open with embedded textures; rigs are shown standing still.
PLY
Common for 3D scans. A PLY with faces opens as a mesh; one that is only a point cloud has no surface to show.
3MF
The project format of Bambu Studio, PrusaSlicer and Cura. It can hold several objects and states its own unit.
Who uses an online 3D viewer
People open 3D files for different reasons. These are the most common.
Makers checking downloads
Check a model from Printables, Thingiverse or Sketchfab for size and holes, whatever format it came in.
Clients and colleagues
Open an OBJ, FBX or GLB someone sent you without installing Blender or a CAD viewer.
Students and teachers
View models on school computers and Chromebooks where installing 3D software is not allowed.
AI and web 3D creators
Check a GLB from an image to 3D generator or a web project before you publish it or send it to print.
3D model viewer questions
Answers about formats, privacy, textures, phones and converting.
Which 3D file formats can I open?
GLB, glTF, STL, OBJ, FBX, PLY, 3MF, STEP and IGES. A .gltf must have its buffers and textures embedded; if it points to separate files, export a .glb instead.
Is my model uploaded?
No. The file is read in your browser and stays on your device. Only the Draco decoder, which is code, is fetched when a GLB needs it.
Does the viewer show textures and colors?
Yes for GLB, glTF and FBX files that embed them. OBJ keeps its colors in a separate .mtl file and STL has no color, so those show as a plain model.
How large a file can it open?
Up to 300 MB. Dense scans and large FBX scenes take a few seconds to read, and older phones may struggle with very large files.
Does it work on a phone?
Yes. It runs in current mobile browsers on Android and iOS, with touch to rotate and pinch to zoom.
Can I convert the model after viewing it?
Yes. Download STL saves the model you are viewing as an STL in millimeters, ready for a slicer. For OBJ, GLB, 3MF or PLY use the STL converter.