Free Online CAD Viewer — No Download Required
Open and inspect CAD drawings in your browser. No software to install, no account to create.
Open Your DWG File NowWhat CAD File Formats Can You Open Online?
CAD (Computer-Aided Design) files come in many formats. The most common in architecture, engineering, and construction are:
- DWG — AutoCAD’s native format, the most widely used in AEC
- DXF — open exchange format for sharing between CAD programs
- DWF — lightweight format for sharing design data
- STEP / IGES — used for 3D models and manufacturing
Our free online viewer handles DWG R2000 (AC1015), the most common format for architectural drawings. It runs entirely in your browser — no plugins, no uploads.
Who Uses an Online CAD Viewer?
- ▸Architects reviewing drawings from consultants or contractors
- ▸Project managers checking construction documents without a CAD license
- ▸Contractors viewing shop drawings and as-built plans on site
- ▸Students working on assignments without an expensive AutoCAD license
- ▸Anyone who receives a DWG file and just wants to see what’s in it
Frequently Asked Questions
▶What is the most common CAD file format?
DWG is the most widely used CAD format, particularly in architecture, engineering, and construction. It’s the native format of AutoCAD, which has been the industry standard since the 1980s.
▶Can I view CAD files on a Chromebook?
Yes. Since this viewer runs in the browser, it works on Chromebooks, Windows PCs, Macs, and Linux machines. No software installation needed.
▶Do I need AutoCAD to open a DWG file?
No. AutoCAD is not required. This free online viewer lets you open, inspect, measure, and print DWG drawings directly in your browser without any Autodesk software.
▶What is a DWG file?
DWG (short for “drawing”) is the native binary file format used by AutoCAD and other CAD software. It stores 2D and 3D design data including geometry, layers, dimensions, text, and metadata.
DWG is the industry standard for architectural, engineering, and construction (AEC) drawings. The format has been in use since the 1980s and is supported by hundreds of CAD applications. Learn more about the DWG file format.
Also see: DWG Viewer · DXF Viewer · How to Open a DWG File