3D Model Viewing Example

🚀 Launch Demo
Online STP viewer, 3D STEP assembly model examples, similar to Lego bricks
AS1 Mechanical Assembly (.stp) 🔍 Interactive Preview

How to View STP Files Online?

1

Upload or Drag & Drop

Drag your .stp or .step file anywhere onto the canvas, or select files via the Open button.

2

Interactive Inspection

Rotate 360°, pan, zoom, inspect mesh polygons, wireframe outlines, and measure dimensions.

3

Customize & Export

Adjust background color, edge crease angles, surface shading tones, or convert and export formats.

Rich Interactive & Viewport Control Capabilities

Online STP Viewer delivers a complete, professional suite of interactive 3D tools directly in your browser. Effortlessly control camera angles, slice geometries, measure dimensions, and customize visual appearances:

🕹️ Camera Navigation & View Presets

Full 360° Orbit rotation, smooth panning, and stepless zoom. Snap instantly to Front, Back, Top, Bottom, Left, Right, or Isometric views, or click Auto-Fit to center the model.

✂️ Multi-Axis Clipping Planes

Slice through your 3D models interactively along the X, Y, and Z axes to inspect internal cavities, wall thicknesses, and hidden structural details.

📐 3D Measuring & Geometry Analysis

Measure exact distances between vertices, calculate 3D bounding box dimensions (X, Y, Z), surface area, volume, and triangle polygon counts.

🕸️ Wireframe & Edge Thresholds

Overlay polygon wireframes, customize edge outline colors, adjust feature crease angle thresholds, and inspect face orientations and normals.

💥 Model Explosion & Component View

Smoothly explode multi-body mesh assemblies using interactive sliders to analyze internal component placement and part relationships.

🎨 Custom Shading, Lighting & Dark Mode

Customize viewport background colors, apply custom surface fill tones, adjust ambient lighting & directional shadows, or switch between Light and Dark themes.

Key Highlights of STP Viewer

⚡ 100% Client-Side Privacy

All 3D mesh parsing and WebGL rendering take place locally in your browser memory. Your 3D models are never uploaded to any remote server.

📤 Export & Format Conversion

Easily convert and export your loaded STP 3D models into other popular 3D formats (such as OBJ, PLY, OFF) or save modified mesh geometries.

🔗 Direct Share & HTML Embedding

Generate direct shareable URLs for remote models or create clean HTML <iframe> embed codes to display 3D models on your own site.

💻 Cross-Platform & OS Compatibility

Fully supported across all major operating systems including Windows, macOS, Linux, ChromeOS, Android, iOS, and iPadOS via WebGL-enabled modern browsers.

📂 Drag & Drop & Batch Loading

Seamlessly drag and drop single .stp / .step files, entire folders, or compressed .zip archives directly into the viewer window.

📱 Mobile & Touch Optimized

Optimized for touchscreens on iPhone, iPad, and Android phones & tablets. Seamlessly open 3D .stp / .step files with intuitive single-finger orbit rotation and pinch-to-zoom touch gestures in Mobile Safari, Chrome, and Firefox without installing any App.