STL Viewer: 3D Model & CAD

Fast, fluid, and powerful mobile 3D STL viewer built for 3D printing enthusiasts, CAD designers, engineers, and hobbyists. Inspect, measure, and present your 3D models anytime, anywhere—100% offline with zero lag.

Whether checking an STL file before sending it to your 3D printer slicer or showcasing your portfolio, STL Viewer delivers desktop-grade 3D performance in your pocket.

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✨ CORE HIGHLIGHTS
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🔍 INTUITIVE TOUCH NAVIGATION
• 1-Finger Orbit: Smooth 360° rotation around your model
• 2-Finger Pinch: Ultra-responsive zoom in and out
• 2-Finger Drag: Precise screen-space panning
• Instant Presets: Switch with one tap between Isometric (ISO), Top, Front, and Right orthographic angles
• Quick Auto-Rotate: Hands-free turntable spin for display

🎥 360° MP4 VIDEO EXPORT
• Generate smooth, hardware-accelerated 360-degree turntable showcase videos
• Multiple Aspect Ratios: Square (1:1), Portrait/Reels (9:16), and Widescreen (16:9)
• Flexible Durations: 4s, 6s, or 10s smooth loops
• Instant Sharing: Save directly to your gallery or share to WhatsApp, Discord, Instagram, and social platforms

📏 PRECISE MESH & DIMENSION ANALYSIS
• Real-world Bounding Box measurements (X width, Y depth, Z height in millimeters)
• Exact triangle count and vertex metrics
• Surface area calculation and topology verification
• Verify scale and volume before starting your 3D prints

🎨 SHADING MODES & MATERIAL PALETTES
• Shaded Mode: High-contrast directional lighting with natural highlights
• Wireframe & Shaded Wireframe: Inspect polygon density and triangular mesh structure
• Normal Vectors Map: Visualize surface face orientation and topology
• Color Library: Apply Cyan, Vibrant Orange, Titanium Gray, Emerald Green, or Hot Rod Red finishes

✂️ INTERIOR CROSS-SECTION SLICING
• Real-time slicing plane tool with height slider (Z-axis cut)
• Inspect interior hollows, infill clearances, and internal walls effortlessly
• Ground bed reference grid and RGB 3D coordinate axes (X, Y, Z)

📂 UNIVERSAL FILE SUPPORT & PRIVACY
• Open any standard ASCII or Binary .STL file directly from Downloads, WhatsApp, Google Drive, or local storage
• Built-in sample models (20mm Calibration Cube, Bench, Gears) for instant exploration
• 100% Offline & Private: No cloud uploads, no account required. Your proprietary CAD files never leave your device

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🛠️ PERFECT FOR:
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• 3D Printing makers validating slice geometries on the go
• Mechanical engineers & product designers reviewing prototypes
• 3D artists, miniature sculptors, and digital modelers
• STEM educators, students, and makerspace creators

Download STL Viewer today and experience fast, beautiful 3D model visualization on your mobile device!

Recent changes:
initial release