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Upload Your 3D File
Drag and drop your 3D file into the viewer or click to browse. We support OBJ, FBX, STL, GLB, GLTF, STEP, STP, PLY, and 3MF — up to 200MB.
Free Online 3D File Viewer
Open and inspect your 3D files directly in the browser, no registration required
Drop file to preview
or click to choose a file
Max file size: 200MB
Supported formats:objfbxstepstpglbgltfstlply3mf
Popular Online 3D Viewers
Multi-Format 3D Model Preview
View all major 3D file formats in your browser — including CAD formats like STEP and STP that most online viewers can't handle. No plugins, no format conversion. Drag, drop, and instantly preview OBJ, FBX, STL, GLB, GLTF, PLY, and 3MF files with full geometry, material, and texture support.
No Software Needed — View on Any Device
Our browser-based 3D viewer works on desktop, tablet, and mobile with zero installation. All processing happens client-side using WebGL — your files never leave your device. Support for files up to 200MB means you can preview production-grade models, photogrammetry scans, and complex CAD assemblies anywhere.
How to View 3D Files Online
Open any 3D model in seconds — no software installation, no account creation, no hassle.
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Preview in Real-Time
Your model renders instantly in the browser using WebGL. Rotate, zoom, and pan to inspect every angle — all processing happens on your device.
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Inspect & Iterate
Check geometry, textures, and scale before importing to your pipeline. Switch formats or upload another model with a single click.
Why Choose AI 3D Model's Online 3D Viewer?
A fast, private, and truly free 3D file viewer that handles formats other tools can't — including STEP and STP CAD files.
200MB File Support
Upload large, production-grade models up to 200MB. No file-size limits that block your workflow — handle game assets, CAD exports, and photogrammetry scans without compression.
9+ Formats Including CAD
View OBJ, FBX, STL, GLB, GLTF, PLY, 3MF, and STEP/STP files. Unlike most online viewers, we support engineering CAD formats natively — no conversion needed.
No Download, No Login
Open your 3D files directly in the browser. Zero software installation, zero account creation, zero barriers. Just drag, drop, and view.
Privacy-First: Client-Side Only
Your files never leave your device. All rendering and processing happens locally in your browser using WebGL — nothing is uploaded to our servers.
Use Cases
Trusted by creators across industries
Who Uses Our Free Online 3D Viewer?
From quick file checks to full design reviews — our viewer helps professionals and hobbyists inspect 3D models without installing software.
3D Printing Enthusiasts
Preview STL, OBJ, and 3MF files before sending to your printer. Check model orientation, scale, and geometry to avoid failed prints and wasted material.
Game Developers
Quickly review GLB, FBX, and OBJ game assets without opening a full game engine. Perfect for asset QA, team reviews, and freelancer deliverable checks.
Product Designers & Engineers
Open STEP and STP CAD files directly in the browser — no AutoCAD or SolidWorks required. Review mechanical parts, assemblies, and prototypes on the go.
Students & Educators
No expensive 3D software licenses needed. Students can view and study 3D models for coursework, while educators can share interactive 3D content effortlessly.
E-Commerce Teams
Preview product 3D models before embedding them on your storefront. Check textures, lighting, and geometry quality for a polished customer experience.
AR/VR Developers
Validate GLTF and GLB assets for AR/VR experiences. Quick-check models for correct scale, orientation, and material setup before deployment.
User Reviews
Trusted by 3D Professionals Worldwide
Game developers, engineers, and designers rely on our free viewer for quick 3D file checks.
- 4.9
Finally a viewer that opens STEP files in the browser. I no longer need to boot SolidWorks just to check a client's CAD model.
Alex Torres, Mechanical Engineer
- 4.8
We use it to QA freelancer 3D assets before importing them into Unity. Drag-and-drop GLB viewing saves us tons of time.
Jordan Yip, Lead Game Developer
- 5.0
The 200MB limit is a game-changer. I can preview photogrammetry scans that choke other online viewers.
Nadia Müller, Photogrammetry Artist
View Your 3D Files Online — Free, Fast, and Private
No software, no signup, no file uploads to servers. Open OBJ, FBX, STL, GLB, STEP, and more directly in your browser. Start viewing now.
Trusted by 3D artists, game developers, engineers, and educators worldwide.
🔒 100% Private
📁 200MB Limit
🚀 Instant Preview
📐 CAD Support