CAD Viewer - DXF & 3D STL Viewer

A fast, private CAD & 3D viewer built natively for Google Chrome. Inspect, measure, and analyze 2D DXF blueprints and 3D STL models directly in your Chrome Side Panel or full-screen tab. 100% client-side WebGL—zero cloud uploads, zero accounts, and safe for strict commercial NDAs. Tired of launching heavy CAD software just to check three measurements? Or having legacy web viewers force you to upload proprietary drawings to their cloud servers? This extension provides an instant, offline engineering workbench directly in your browser. ⚡ KEY CAPABILITIES • 100% Private & Offline: All WebGL processing happens directly on your GPU. No files, geometry, or telemetry ever leave your device. • Dual 2D & 3D Engine: Seamlessly drag and drop 2D .dxf vector drawings and 3D .stl meshes (binary & ASCII). • Chrome Side Panel Ready: Keep your CAD drawings open alongside emails, estimating spreadsheets, or slicers without switching windows. • High-Performance Viewport: Handles 5M+ polygon meshes with smooth 60fps pan, orbit, and zoom controls. • Fix Inverted Models: One-click Z-Up vs. Y-Up rotation toggle eliminates sideways imports instantly. 🛠️ FREE INSPECTION TOOLS • Interactive Dimensioning: Place persistent point-to-point measurement pins with live distance, angle, and radius readouts. • Real-Time Unit Switcher: Toggle dynamically between millimeters (mm), centimeters (cm), meters (m), inches (in), and feet (ft). • CAD Layer Control: Toggle DXF layer visibility on and off to isolate complex architectural drawings. • Visual Environments: Switch between Dark Slate, Blueprint Blue, and high-contrast Paper Mode. • 1-Click Measurement Copy: Copy a clean text summary of all on-screen dimensions directly to your clipboard for fast quoting. 💼 PROFESSIONAL ENGINEERING TOOLS (PRO TIER) • Reference Scale Calibration: Click any known line on an unscaled plan, type the true dimension, and automatically calibrate the entire drawing. • Vector PDF Export: Generate crisp, printable scaled blueprints complete with an architectural title block. • CSV / Excel Coordinate Export: Export all pin coordinates and distances into a structured spreadsheet. • 3D Volume & Weight Estimator: Calculate accurate internal volume (cm³) and estimated filament costs for PLA, PETG, and ABS. • Cross-Section Analysis & Overhang Heatmap: Inspect interior hollow cavities and detect print support zones in seconds. (Note: Proprietary AutoCAD .dwg files must be saved as .dxf from your CAD package before viewing).