PDFsharp & MigraDoc Forum

Could someone please point me to sample code or sketch the key properties I'd need to access to determine (or even just get a reasonable estimate) of the size (in bytes) of one or more pages in a PDF?

I need to break existing PDFs into several smaller PDFs where each part should not exceed a specified size. These PDFs typically are just scanned documents, so the contents are image files, so maybe it's good enough if I can just find out (in code) the size of each page's image file, but it would be better to have a general solution that knows how big the entire page is.

Is it simply the size (in bytes) of the stream object that I want?

Once I know how to calculate/estimate page sizes, the code is simple: accumulate pages until the current page exceeds the threshold; save all the previous pages to a new file, and continue starting from the current page...

Thanks in advance for any help.

Chris

A page can reference multiple objects (fonts, image, ...).
And objects can be referenced by multiple pages (fonts, logos, ...).

There is no simple solution (in general).

If you have a 1:1 relation between pages and images then you can go the easy way ...
... and take the sizes of the images.

_________________
Regards
Thomas Hoevel
PDFsharp Team

Ok, so a general solution is not possible...

But yes, for the current project there is indeed a 1:1 correspondence between pages and images - these particular PDFs are just scanned documents, one image per page.

So, if you could give me an example of the object reference I need to get the size of an image on a page, that would be a big help (that is, it would save me a lot of time figuring out something that is hopefully already at your fingertips... I hope I'm not asking too much!).

Thanks,

Chris

Well, it seems all you need to know (to solve this task) is in the ExportImages sample in the samples folder:
PDFsharp\Samples C#\ExportImages

_________________
Regards
Thomas Hoevel
PDFsharp Team