Portable Document Format (known as PDF) was developed back in 1990 as the most accurate way to distribute any type of information. PDF files are viewed and printed in the same way on all computers regardless of their type.
What is DXF
DXF stands for Drawing Exchange Format. It was introduced in 1982 by Autodesk. Today DXF is one of the most popular vector formats in the world.
Problems with DXF
Sometimes it's quite difficult to interpret a DXF file correctly. The exact appearance of lines may depend on many settings in the header of the DXF document that seem obscure. This is why many designers prefer exporting DXF files only.