Online 3D Viewer
Open 3D files in your browser, inspect geometry, and preview assets locally before they enter your production pipeline.
Browser-local workflow
How this tool works
- Step 1
Choose a format
Start with the option that matches your job.
- Step 2
Open on this device
The supported work happens locally in your browser.
- Step 3
Orbit and inspect
Use the result in the next step of your work.
Direct answer
Which online 3D viewer should I use?
Choose the viewer that matches the file extension you actually received. Modelfy currently opens 15 formats, processes the selected model file locally, and documents loader-specific limitations on each page. Use the preview to inspect geometry and orientation, then validate materials, units, animation, and manufacturing constraints in the destination tool for your workflow.
Choose a viewer by workflow and format behavior
Web delivery and real-time scenes
Start with GLB or GLTF when you are checking a web, commerce, game-engine, or AR asset. GLB keeps scene data in one binary file, while GLTF can describe the same scene with JSON and embedded resources. The individual viewer pages explain the single-file boundary used by this browser implementation.
3D printing and manufacturing review
Use STL and 3MF for printable mesh inspection, and STEP, STP, or 3DM when the source comes from CAD. A browser preview can expose missing geometry and orientation problems, but it does not replace a slicer, tolerance check, or validation in the manufacturing application that owns the downstream workflow.
Interchange, scans, and legacy assets
OBJ, PLY, FBX, DAE, and 3DS cover common interchange, scan, animation, and archive workflows. These formats differ sharply in material, texture, animation, and hierarchy support. Open the dedicated format page to see what the current loader reads before assuming every part of the source scene will appear.
Specialized geometry and spatial formats
DXF is useful for supported drawing and mesh entities, VOX for MagicaVoxel-style voxel data, and USDZ for supported packaged USD assets. Their viewer pages document parser-specific limits and link to the relevant maintainer or standards reference so you can compare the implementation with the underlying format.
All format viewers
Open any of these 3D formats online
Frequently asked questions
Is my 3D model file uploaded to a server?
The selected 3D model file is processed by the browser and is not uploaded to Modelfy. Website code and static assets still load over the network like a normal web page.
Which 3D formats can I open online?
Fifteen formats: GLB, GLTF, OBJ, STL, PLY, FBX, DAE, 3DS, 3MF, USDZ, VOX, DXF, STEP, STP, and 3DM. Each has a dedicated viewer page tuned for that format.
Is the online 3D viewer free to use?
Yes. The browser viewer, converter, and local 3D text tool require no account and add no watermark. Input limits vary by format, up to 50 MB; AI model generation is a separate credit-based product.
Other popular 3D tools
Continue the workflow
3D Text Generator
Create custom 3D text locally in your browser, preview it instantly, and export real mesh files for design or 3D printing.
3DM Viewer
Open and inspect .3dm files directly in your browser with a private local 3DM 3D viewer.
3DS Viewer
Open and inspect .3ds files directly in your browser with a private local 3DS 3D viewer.
3MF Viewer
Open and inspect .3mf files directly in your browser with a private local 3MF 3D viewer.
DAE Viewer
Open and inspect .dae files directly in your browser with a private local DAE 3D viewer.
DXF Viewer
Open and inspect .dxf files directly in your browser with a private local DXF 3D viewer.
FBX Viewer
Open and inspect .fbx files directly in your browser with a private local FBX 3D viewer.
GLB Viewer
Open and inspect .glb files directly in your browser with a private local GLB 3D viewer.
From a single image to a production-ready 3D model
These browser tools stay free for viewing and converting files you already have. When the model does not exist yet, Modelfy generates a textured mesh from one reference image — the first one is free.