PDF (Portable Document Format) is one of the most popular formats used for storing document files which include both text and graphics. As opposed to other formats with a similar function, PDFs can be easily transferred between different applications and different operating systems, and generally don't have a very large size. Moreover, they can offer decent image quality in a compressed format and can be secured with passwords or watermarks.
DWG (which stands for "Drawing") is a proprietary format of AutoCAD, a program widely used for creating engineering and architectural projects. The format is also a default extension used by several other computer-aided design (CAD) pieces of software, including IntelliCAD, Caddie or DraftSight. DWG files contain complex design structures including several layers, which can be 2-dimensional or 3-dimensional.
AutoCAD DXF (Drawing Interchange Format, or Drawing Exchange Format) is a CAD data file format developed by Autodesk for enabling data interoperability between AutoCAD and other programs.
VeryDOC PDF to DWG Converter - Convert PDF to DWG/DXF
https://www.verydoc.com/pdf-to-dwg-dxf.html
As a surveyor, architect or habitual user of graphic design programs such as AutoCAD, to edit designs in PDF formats shared on the internet, we find ourselves with the strong need to have a converter for these files and there is nothing better for this than PDF to DWG Converter. PDF to DWG Converter is the ideal solution for you to convert PDF files into editable DXF and DWG files easily and quickly. DWG format is supported by most CAD programs such as AutoCAD. PDF to DWG Converter allows you to extract items from the PDF file and polish them in the CAD program. It's worth mentioning that this converter is capable of maintaining the original scale of the PDF files, then you can edit your drawings easily.
VeryDOC DWG/DXF to PDF Converter
https://www.verydoc.com/dwg-converter.html
This software can be used to batch convert DWG and DXF files to vector PDF files without the need of AutoCAD. It is a stand-alone AutoCAD drawing file conversion program, you do not need AutoCAD or Adobe Acrobat to use this PDF Converter. It is also a Command line application, you can run it in Command Line Window or call it from your application easily.
VeryDOC DWG/DXF to Vector Converter
https://www.verydoc.com/dwg-to-vector.html
VeryDOC DWG to Vector Converter (DWG2Vector) can be used to batch convert from AutoCAD DWG and DXF files to other scalable vector graphics formats, such as PDF, EMF, WMF, SVG, Postscript (PS), EPS, SWF (Flash), XPS, HPGL, PCL etc. formats, quick and easily.
VeryDOC DWG to Image Converter
https://www.verydoc.com/dwg-to-image.html
VeryDOC DWG to Image Converter allows you convert DWG and DXF files to Raster BMP, JPG, PNG, TIFF, GIF formats directly without need of AutoCAD, quick and easily. DWG to Image Converter is a command line application, you can run it by manual or call it from a script (or .bat) file to batch convert your DWG and DXF files to image formats.
VeryDOC Scanned PDF to Vector DWG/DXF Converter
https://www.verydoc.com/raster-to-vector-converter-command-line/index.html
Raster to Vector Converter Command Line is designed for converting raster images to scalable vector images. It supports most popular formats of raster images as source formats and common formats of vector images as target formats. It uses advanced algorithms to calculate the paths of raster patterns and convert raster patterns to vector ones.