How to decrease rendered file size

[Shawn]

Hi,

I use FPDF_RenderPage to print PDF file on Windows platform. It create a much larger rendered data file than Adobe Reader for some files. I use same printer driver (PCL6) for both testing.  

After comparing the rendered data files, it seems the reason is that PDFium render text as basic elements (such as Path, Point and BoundingBox etc) instead of Font as Adobe Reader does. 

Is there a way to configure PDFium rendering text as Font? I noticed there is a "m_pUserFontPaths" in "FPDF_LIBRARY_CONFIG" which can be used to initialize PDFium library. But not sure how to use it. 

By the way, fonts in the testing file include "Arial-BoldMT", "Arial-ItalicMT", ArialMT and Calibri. 

Thanks for any help!

[Lei Zhang]

Try turning on the "pdf_use_win32_gdi" GN build option, rebuild, and
then call FPDF_SetPrintTextWithGDI(true) before rendering. The code
probably does not work 100% correctly which is why it's been sitting
in an experimental state.

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[Lei Zhang]

I should also mention Windows GDI is very old technology. Given
mainstream Windows 7 support just ended, we are targeting newer
Windows releases that have XPS support. (https://crbug.com/1034053) So
in the long run, the code I mentioned will likely go away.