Unfortunately, there is a limitation to the AutoCAD conversions, in that Able2Extract will
only be able to convert files that were saved to PDF from an actual electronic
CAD file. Unfortunately, scanned or image-based PDFs such as a JPEG will not be
The PDF to DXF/DWG conversion will only work on PDF documents that have vector graphics and text elements. It does not work on "image" documents, as Able2Extract cannot perform any type of reconstruction (i.e. “vectorization”) for this type of PDF file.
This article refers to Able2Extract and