A DWF file is a 2D/3D drawing saved in the Design Web Format (DWF) developed by Autodesk. It contains design data, which includes graphics and text. DWF files are saved in a Zip-compressed format to reduce the size of the file.

The Design Web Format was developed as a device-independent and resolution-independent drawing format for distributing designs. It is not intended to replace popular CAD formats, but instead, is used for saving designs in a more accessible, open format that can be opened without the need to purchase expensive CAD software. The format is based on the HOOPS Stream (HSF) 2D/3D format but is also Zip-compressed.