3D Model Viewer Online
Use this free 3D model viewer online to open GLB, GLTF, OBJ, STL, FBX, 3DS, and PLY files in your browser. Rotate, zoom, inspect meshes, switch wireframe, change backgrounds, and export screenshots without uploading your file.
Click to upload or drag & drop a 3D file
GLB, GLTF, OBJ, STL, FBX, 3DS, PLY
Model Info
How This 3D Model Viewer Online Works
This 3D model viewer online opens your file directly in the browser and renders it locally with WebGL. If you searched for a GLB viewer, OBJ viewer, STL viewer, or a quick way to inspect an FBX file without desktop software, the tool above gives you the same workflow in one place. Upload a file, rotate it, zoom in on details, inspect topology, and export a screenshot without sending data to any server.
Free Alternative to Sketchfab — No Signup
Unlike Sketchfab and other online 3D viewers that require accounts, upload limits, and store your files on their servers, this tool processes everything locally in your browser. Your 3D model is read using the FileReader API and rendered with Three.js — no data is ever transmitted to any server. This makes it safe to preview confidential CAD models, proprietary game assets, architectural designs, and any other sensitive 3D files without worrying about data privacy or upload limits.
Supported 3D File Formats
This viewer supports seven popular 3D file formats. GLB and GLTF are modern web-ready formats that package geometry, materials, textures, and animations together. OBJ remains a common exchange format across design tools. STL is the standard for 3D printing previews. FBX is widely used in game, animation, and motion pipelines. 3DS is a legacy format from older 3ds Max workflows, and PLY is common in 3D scanning and photogrammetry. Each format is handled by a dedicated Three.js loader for maximum compatibility.
If you need a quick browser-based STL viewer for print checks, a GLB viewer for web assets, or an OBJ viewer to confirm exported meshes before delivery, this page covers all of those use cases without switching tools.
How to Use the 3D Viewer
Click the upload area or drag and drop your 3D file. The viewer automatically detects the format and uses the appropriate loader. Once loaded, the camera frames the model automatically. Left-click drag to rotate, scroll to zoom, right-click drag to pan. The toolbar provides wireframe mode to inspect mesh topology, normal visualization to check surface orientation, background color options for better contrast, screenshot and copy-to-clipboard functionality. Model statistics show vertex count, face count, bounding box dimensions, file size, and mesh count.
Use Cases for 3D Model Viewing
3D printing enthusiasts preview STL files before slicing. Game developers inspect GLB and FBX assets before importing into engines. Product designers review CAD exports. Architects verify building models. Students explore 3D files from online repositories. Engineers check exported meshes for errors. Photogrammetry professionals inspect PLY scans. Whatever your use case, this viewer gives you a fast, private way to check any 3D file without installing software.
Model Statistics and Analysis
After loading a model, detailed statistics are displayed: vertex count, face count, number of meshes, file size, and bounding box dimensions (width, height, depth). These metrics help assess model complexity for performance optimization, verify export accuracy, estimate 3D print time and material usage, and check that models meet polygon budgets for game engines. High vertex counts may indicate models that need decimation, while unusual bounding box dimensions can reveal scaling issues in the export pipeline.
Frequently Asked Questions
What 3D file formats are supported?
The viewer supports GLB, GLTF, OBJ, STL, FBX, 3DS, and PLY files. This covers the most common formats used in 3D printing, game development, CAD, animation, and 3D scanning.
Is my file uploaded to any server?
No. Your file is processed entirely in your browser using the FileReader API and Three.js. No data is transmitted to any server. You can verify by checking the Network tab in your browser developer tools.
How is this different from Sketchfab?
Sketchfab requires an account, uploads your files to their servers, and has storage limits. This tool requires no signup, processes files locally for complete privacy, and has no file size limits. It is a free, privacy-first alternative.
Can I take screenshots of my model?
Yes. Click Screenshot to download the current view as a PNG, or Copy Image to copy it to your clipboard for pasting into documents, chat, or design tools.
What do the model statistics show?
After loading a model, you see format type, file size, vertex count, face count, number of meshes, and bounding box dimensions (width, height, depth). These metrics help assess complexity, export accuracy, and printing requirements.
Does it work offline?
After the page loads, you can disconnect from the internet and continue viewing models. The Three.js library is cached by your browser. File reading and rendering are entirely local operations.