What is a .DWG file?
DWG is AutoCAD’s native 2D/3D drawing format. Created and opened by Autodesk AutoCAD.
- Did you know
- DWG is AutoCAD’s native format; AutoCAD launched in 1982 and made desktop CAD mainstream.
- DWG is a proprietary binary format with no official public specification, which spurred the Open Design Alliance to reverse-engineer it from 1998.
- Autodesk later added TrustedDWG technology so AutoCAD can warn when a file was last saved by non-Autodesk software.
- What Analyser shows you
- Render 2D vector diagrams and CAD drawings to a preview: draw.io / diagrams.net (DRAWIO) files - decoding the mxGraph model, inline or compressed - AutoCAD DXF drawings (parsing the ASCII ENTITIES section), and binary AutoCAD DWG/DWT drawings, parsed by LibreDWG (WebAssembly) into their entities and rendered to an SVG, with an entity and layer breakdown. The thumbnail AutoCAD stored inside the DWG when it was last saved is pulled out alongside it, so even a drawing no CAD engine can open still shows a picture of itself.
- Open a .DWG file
- Drag a .DWG file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
- Related formats
- .DRAWIO · .DXF · .DWT. See all supported file types.