FREEDOM251

Freedom251 › 3D Model Viewer Software

Online 3D Viewer

Free plan Self-hostedWeb

Visit Online 3D Viewer Alternatives Pricing

Online 3D Viewer's own site

What Online 3D Viewer is

Online 3D Viewer is a free browser-based tool for viewing and exploring 3D models. It can open files from a computer, accept files or folders by drag and drop, read ZIP files, and load models from an external web server URL. Files opened locally are processed in the browser rather than uploaded to a web server. It imports 3dm, 3ds, 3mf, amf, bim, brep, dae, fbx, fcstd, gltf, ifc, iges, step, stl, obj, off, ply, and wrl files, and exports 3dm, bim, gltf, stl, obj, off, and ply. The interface presents files, materials, meshes, and model details. Users can adjust background color, edge display, and default model color, and choose a light or dark theme. Links and website embed code are available for models hosted on a web server; locally opened models cannot be shared through the viewer. The external server must allow CORS requests for its models to load. The project is free and open source under an MIT license, with web and self-hosted platforms listed. For unresolved problems, the FAQ directs users to create a GitHub issue.

Who it suits

It suits people who need to inspect or convert supported 3D model files in a browser, including users who want to process local files without uploading them to a web server. Sharing is suited to models already hosted on a web server.

What it does well

  • Imports a broad range of listed 3D formats.
  • Local files are processed in the browser.
  • Can export seven listed formats.
  • Offers light and dark themes.
  • Free and open source under an MIT license.

What to know first

  • Locally opened models cannot be shared through the viewer.
  • External models require CORS access from their server.
  • Unresolved issues are directed to GitHub.

Plans

PlanBilled and limitsPrice
Online 3D ViewerFree and open source; no plan limits statedFree

As 3dviewer.net lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

  1. Visit https://3dviewer.net/.
  2. Open a local file, drag in files or folders, or open a ZIP file.
  3. Load a model from an external web server URL if its server allows CORS requests.
  4. Inspect the model’s files, materials, meshes, and details.
  5. Export to a supported format or create a link or embed code for a web-hosted model.

Verdict

Online 3D Viewer covers a wide range of import and export formats, with local file processing and model inspection in the browser. Sharing requires a model hosted on a web server, and that server must allow CORS for loading.

Questions

How much does Online 3D Viewer cost?

The Online 3D Viewer plan costs nothing.

Is Online 3D Viewer open source?

Yes. The project describes itself as free and open source, and its GitHub repository lists an MIT license.

Which platforms are supported?

The listed platforms are web and self-hosted.

Which file formats can it import and export?

It imports 3dm, 3ds, 3mf, amf, bim, brep, dae, fbx, fcstd, gltf, ifc, iges, step, stl, obj, off, ply, and wrl. It exports 3dm, bim, gltf, stl, obj, off, and ply.

Can I share a model opened from my computer?

No. Models opened from a computer cannot be shared through the viewer because they are not publicly available there.

What is required to load a model from an external server?

The external server must allow CORS requests.

Facts from Online 3D Viewer's own pages

Display settings
Settings include background color, edge display parameters, default model color, and light or dark themes. · 3dviewer.net, 8 Oct 2026
Export formats
It supports exporting 3dm, bim, gltf, stl, obj, off, and ply files. · 3dviewer.net, 8 Oct 2026
External file requirement
Loading a model from an external server requires that server to allow CORS requests. · 3dviewer.net, 8 Oct 2026
Implementation libraries
The project lists three.js, pickr, fflate, draco, rhino3dm, web-ifc, and occt-import-js as external libraries it uses. · github.com, 8 Oct 2026
Import formats
It supports importing 3dm, 3ds, 3mf, amf, bim, brep, dae, fbx, fcstd, gltf, ifc, iges, step, stl, obj, off, ply, and wrl files. · 3dviewer.net, 8 Oct 2026
Local file privacy
Files opened from a computer are processed in the browser and are not uploaded to a web server. · 3dviewer.net, 8 Oct 2026
Model inspection
The viewer presents files, materials, meshes, and model details in its interface. · 3dviewer.net, 8 Oct 2026
Open source
The project describes itself as free and open source, and its GitHub repository lists an MIT license. · github.com, 8 Oct 2026
Purpose
Online 3D Viewer lets users visualize and explore 3D models in a browser. · github.com, 8 Oct 2026
Sharing and embedding
Users can share links to models hosted on a web server and generate embedding code for websites. · 3dviewer.net, 8 Oct 2026
Sharing limitation
Models opened from a computer cannot be shared through the viewer because they are not publicly available there. · 3dviewer.net, 8 Oct 2026
Support
The FAQ directs users who cannot resolve an issue to create an issue on GitHub. · 3dviewer.net, 8 Oct 2026
Ways to load models
Users can open local files, drag and drop files or folders, open zip files, or load models from an external web server URL. · 3dviewer.net, 8 Oct 2026

Where Online 3D Viewer stands on Freedom251

Look at these too