# OBJ Viewer

> Loft OBJ Viewer is a free online OBJ (.obj) file viewer that opens Wavefront OBJ files in your browser without any upload, install, or signup. It renders the mesh in a Three.js orbit scene with shaded / wireframe / shaded + edges modes, preserves material colours when present, measures distance between two surface points, and exports a PNG screenshot. Opens OBJ files from Blender, Maya, ZBrush, and any other 3D package; also auto-detects STL, PLY, GLB, glTF, and 3MF when dropped. Files never leave your device.


Live tool: https://lofttools.com/tools/open-tools/obj-viewer

Category: Open Anything


## What it does

- Wavefront OBJ parsing (geometry + material colours where present)
- Three.js WebGL2 renderer with orbit, pan, zoom
- Shaded, wireframe, and shaded-with-edges render modes
- Point-to-point measurement (click two surface points)
- Reset-camera button frames the mesh in one click
- PNG screenshot export
- Drag-drop or file-picker input
- Also accepts STL, PLY, GLB, glTF, 3MF — format auto-detected on drop
- Triangle count + file size in the status footer
- Works offline after the first visit (PWA cache)

## How it works

1. **Drop your OBJ file** — Drag any .obj file into the browser, or click Open and pick one. The model loads instantly — nothing leaves your device.
2. **Orbit and inspect** — Drag to orbit. Right-click drag (or two-finger drag on a trackpad) to pan. Scroll to zoom. Switch between shaded, wireframe, and shaded-with-edges modes.
3. **Measure** — Click Measure, then click two points on the surface. Distance shows in the status bar in the file's native units.
4. **Screenshot** — Click Screenshot to save the current viewport — including any applied .mtl material — as a PNG.

## FAQ

### What OBJ variants are supported?

Standard Wavefront OBJ geometry. MTL material files embedded in the same drag aren't loaded (multi-file drop isn't supported in this release), but the geometry always renders with a default shaded material.

### Will my file leave the browser?

No. Parsing and rendering happen in your browser tab. Nothing is uploaded to a server.

### Can I open STL, PLY, GLB, or 3MF files here too?

Yes — drop any of those and the viewer auto-detects the format. Separate landing pages exist for each format at /tools/open-tools/stl-viewer etc.

### What about very large OBJ files?

OBJ files up to 100 MB load fine in modern browsers. Very dense models (multi-million triangles) may cause a brief pause during parsing — this is a JavaScript parsing limitation, not a server limit.

### Why are some textures missing?

This release renders geometry only; external texture images referenced by the .mtl file are not fetched. Drop a GLB for textured models — GLB embeds textures in a single file.

## Tips

- **Drop OBJ + MTL together** — Drag the OBJ and its companion MTL file in one go — Loft links materials automatically. Drop textures too for the full look.
- **Right-click drag to pan** — Left-click orbits, right-click pans, scroll zooms. Hold Shift for fine orbit control on detailed models.
- **PNG snapshot at any size** — Camera icon saves the current view. Pick up to 4K resolution for slide decks or asset previews.

## How Loft OBJ Viewer compares

| Tool | Install needed | Files uploaded | OBJ | Multi-format | Measurement | Cost |
| --- | --- | --- | --- | --- | --- | --- |
| Loft OBJ Viewer | No | No (in-browser) | Yes | Yes (STL/PLY/GLB/3MF) | Point-to-point | Free |
| online-3d-viewer.com | No | Yes (server upload) | Yes | Yes | No | Free |
| 3dviewer.net | No | Yes (server upload) | Yes | Yes | No | Free |
| MeshLab | Yes (desktop) | N/A | Yes | Yes | Yes | Free |
| Blender | Yes (desktop) | N/A | Yes | Yes | Yes | Free |

_Verified 2026-05. Browser viewers usually upload — Loft's runs entirely in your tab, no server round-trip.
_

## Privacy — what we do not do

This tool runs entirely in the browser via WebAssembly. Your file never reaches a Loft Tools server. Specifically:

- **No upload.** The file bytes load into the browser tab's memory and process on your own CPU. Open DevTools → Network and observe zero outbound requests carrying file data while OBJ Viewer runs.
- **No AI training on your file.** Loft does not train models. We could not train on a file we cannot see.
- **No content scanning.** No virus, copyright, or content-moderation pass against your file. The bytes are not accessible to us.
- **No server-side log of file contents, filenames, or EXIF metadata.** Cloudflare edge captures URL and truncated IP for abuse defense (standard CDN behaviour). Cloudflare Web Analytics records anonymous page hits, no cookies, no PII. Nothing about your file content reaches any log.
- **No retention.** Close the tab and the file leaves browser memory. No backups exist on our side because no copy ever existed on our side.
- **No account.** No email, no signup, no auth, no telemetry tied to you.
- **Offline-capable after first visit** (PWA). Once you've loaded a tool, it caches; later sessions work without internet. For high-sensitivity files, run the tool once online to warm the cache, then disconnect before processing.

Compare with upload-based services: each transmits your file to a processing server. Even over HTTPS, each has logs, retention windows, and subpoena exposure. Loft has none of these because the server architecture does not include your file.

## More

- All tools: https://lofttools.com/tools
- Category: https://lofttools.com/tools/open-tools
- LLM index: https://lofttools.com/llms.txt