How to Display CAD DWG Files in a Web Browser — No Plugins(CAD+WEBGIS)

` ` If you've ever tried to share a DWG file with someone who doesn't have AutoCAD, you know the pain: they can't open it, exporting to PDF kills the layers, and running a full desktop license just to view drawings is overkill. What if non-technical users could just open a URL? This post walks through how to render AutoCAD DWG files directly in a web browser — no plugins, no desktop software, no PDF export — using WebGL and a JavaScript SDK called VJMAP. Here's what the end result looks like: a fully interactive CAD drawing in the browser, with infinite zoom, pan, layer query, and entity hover highlighting. Why Is This Harder Than It Sounds? DWG is Autodesk's proprietary binary format. It contains geometric entities (lines, arcs, polylines, ellipses, splines, blocks, text), layer metadata, coordinate systems, and rendering styles — none of which browsers can parse natively. The common workarounds all have real tradeoffs: Export to SVG / PDF — Simple, but lossy. Loses layers, metadata,