Insert PDF is designed to convert computer-generated PDF files. When a software program saves a drawing or diagram as a PDF file, it creates a rich document including precise data about all of the objects and text in the file. Scanned drawings, on the other hand are like photographs. Once saved, even in the PDF format, they lose all of their intelligence and the drawing is reduced to just a bunch of pixels.
Sometimes you'll see computer-generated PDF files referred to as vector PDF files and scanned drawings as raster PDF files.
Visual Integrity is specialized in the accurate conversion and extraction of vector PDF files. Scanned drawings need to be converted in a completely different way, usually through some type of approximate tracing process. If you have a vector PDF file, you should always choose software like ours to ensure the highest quality results.