PDF XChange Forum

Hi,

Assuming you have a lot of pdf created by another tool from images is there a way to
create a script to fix / edit pdf document resolution ?

By example consider an image initialy scanned with 600dpi... you may want to tell pdf
document it is 300dpi... resulting in a bigger printed document (this will be equivalent
to doing 200% without interpolation.

I expeted being able to do this using "Edit doc properties" but don't see such feature.

Hope this is clear enough?
Regards
Bernard.

Hello bernard meunier,

The PDF file format is coordinate based - so any images will be placed at given coordinates and will have given dimensions in the coordinate system of the page, so the DPI will be a result of those dimensions and the available number of pixels in the file. So to "change" the DPI of an image - you will need to resize it - you can do so e.g. by resizing the page it is on (as I understand you want to do that as well) - and select to scale the content as well. So please do give the "Resize Pages" tool a try and make sure to click on the "All Options..." button on the left - to turn on the content scaling too.
However given the coordinate nature of PDF files - I would recommend against resizing the pages now, and instead use 200% scaling when printing them to paper unless e.g. another system can't do that - and needs to get the files at the "right" dimensions.

Regards,
Stefan

Hi Stephan,

Thanks Resize do the job as expected (I were thinking Resize will change document
size and therefore image quality but in fact no!).

Regards
Bernie