3D Model Viewer Online Free
Upload any 3D model file and view it instantly in your browser. Supports GLB, GLTF, OBJ, STL, FBX, 3DS, and PLY formats. Rotate, zoom, toggle wireframe, change backgrounds, and take screenshots. Your file never leaves your device — a free alternative to Sketchfab with zero signup.
Click to upload or drag & drop a 3D file
GLB, GLTF, OBJ, STL, FBX, 3DS, PLY
Model Info
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-optimized formats that include geometry, materials, textures, and animations — often called the JPEG of 3D. OBJ is a universal format supported by virtually every 3D application. STL is the standard for 3D printing. FBX is widely used in game development and animation pipelines. 3DS is a legacy format from 3ds Max. PLY (Polygon File Format) is common in 3D scanning and photogrammetry. Each format is handled by a dedicated Three.js loader for maximum compatibility.
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.