A DWF file is a file format developed by Autodesk for the efficient distribution and communication of rich design data to anyone who needs to view, review, or print design information without needing to know AutoCAD or other design software. DWF files are created in computer-aided design (CAD) programs and contain design data, including graphics and text. They are vector-based and built using mathematical formulas rather than pixels, which allows them to display intricate detail regardless of zoom level. DWF files are highly compressed, making them easy to download and transmit. They are similar to PDF files in that they are accessible and standardized, and can be opened, viewed, and marked up without any specialist software programs. DWF files are not a replacement for native CAD formats such as AutoCAD drawings (DWG), but rather a way to share design information and content with anyone who needs to view it.