There are certain situations when you receive or have to prepare architectural/ engineering drawing in PDF format. These PDF files cannot be tampered with or altered, so they offer good professional and financial security; in some other cases, they are provided as prints of the original drawings, just like blue or ammonia prints of yesteryears. Trouble is that you cannot edit these files, so you need PDF to CAD conversion to convert them into DWG or other CAD files for convenient viewing, editing or alteration.
