BlinkCAD is a free online DWG viewer, DXF viewer, and DWG reader — a browser-based alternative to DWG TrueView. Open DWG files online instantly — no installation, no signup needed. No paid software required — just open your browser and upload. View CAD files in seconds. Built for contractors, architects, engineers, and project managers. Measure distances, control layers, and share CAD files with a simple link. The best free DWG viewer online — works on desktop, tablet, and phone.