Select of PDF pages

The user can select which pages to convert with PDF files that have multiple pages or simply choose to convert all pages with one execution. The selected pages should be separated by using a semicolon. (e.g. 1; 4; 12; 34). To convert several pages in a row (from - to) you can use a hyphen (e.g. 12-18).

Example:

1;4;8-10;12

Print2CAD will convert pages 1,4,8,9,10 and 12.

For PDF to raster conversion, the settings shown in the above interface will have no effect. To select specific pages of a PDF to convert into a raster file, please go to the "PDF to Raster“ menu. As shown below:

Scaling of Coordinates

Coordinates in PDF files are usually in a resolution of 72dpi. 72dpi means that one inch (25.4 mm) equals 72 pixels.

A PDF file can have the accuracy of 25.4/72 = 0.35 mm or 1/72 inch.

A 1200 dpi resolution would make a PDF file with 18.5 * 72/1200 = 1.1 mm or 1/24 inch accuracy. These types of high-resolution PDF files are rare.

Unfortunately, the scale of a PDF drawing can only be retrieved from the header of a construction plan.

Find the scale in the header and input it as a scaling factor for the coordinates (e.g. the scale per the header is 1:50 and therefore the the scaling factor is 50).

Graphic: PDF Coordinates with resolution of 72dpi

Graphic: Retrieving the scale and plan size from the PDF

Rotation of Coordinates

The user can specify the rotation angle for their converted files.

When converting from PDF to DWG or DXF, the arrangement of the coordinates of the PDF paths are used, and any potential display rotation of the PDF representation is ignored. Due to this reason, the converted data may be displayed in a different rotation angle in the DWG or DXF versus the PDF reader displayed the PDF:

Graphic: Rotation of Coordinates

Transformation of Coordinates

Factors selected by the user are added to every coordinate.

Do Not Convert Very Bright or White PDF Entities

A PDF file often contains white or very bright elements placed on a white background.
In the PDF file these elements may not be seen, but after a conversion to DWG or DXF they could appear as a solid white hatch.

Print2CAD allows the user to select a feature to delete these elements when converting into
DWG or DXF.

The maximum brightness of elements (0-255) should be selected:
0 – black to white, all elements will be deleted, 255 – white, all white will be deleted.

Graphic: Diagram of function "Do Not Convert Very Bright or White Entities"