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DWG refers to both a technology environment and .dwg files, the native file format for Autodesk’s AutoCAD® software.
AutoCAD .dwg file format
Autodesk created .dwg in 1982 with the very first launch of AutoCAD software. DWG files contain all the information that a user enters in a CAD drawing. This data can include:
The .dwg file format is one of the most commonly used design data formats, found in nearly every design environment.
TrustedDWG™ technology lets you know of potential incompatibility when a file was not last saved by an Autodesk software, and identifies files that might not be supported by Autodesk software.
View, edit, and share .dwg, .dwf, and .dxf files for free. Use the online viewer to upload and view files in your browser or choose a downloadable viewer.