I need to export PCB design into BMP, but with custom DPI (for example 1325) size for advanced printing. Is there any extension for printer (such as cutepdf or primo pdf) or some application that allows this? It is very important to set exact DPI.
The easiest way would be to export the copper layers as Gerber (which is a vector format), which can then be printed to a PDF. Using Inkscape you can rasterize this PDF to a bitmap with the desired DPI.