Last week I released SupportSage, a CLI tool that analyzes STL geometry and generates optimized support structures. The response was great, but there was a recurring question: "Can I try it without installing anything?" So I built a browser-based version . Drop an STL file into the viewport and see the overhang analysis immediately — color-coded, interactive, and fully client-side. What It Does The web demo takes your STL file and: Parses it entirely in your browser — binary and ASCII STL both supported Computes face normals and classifies each face by overhang severity Color-codes the model so you can see at a glance where supports are needed: 🔴 Red = Critical overhang (>120° from vertical) 🟠 Orange = Moderate (70-120°) 🟡 Yellow = Borderline (45-70°) 🟢 Green = Safe (no support needed) Runs island detection — finds disconnected overhang regions Estimates material savings vs traditional uniform support Lets you inspect from any angle — rotate, pan, zoom All of this happens in your browser.…