On Sun, May 4, 2014 at 7:13 AM, Christophe Meyer <
christophe.meyer.2...@gmail.com> wrote:
> Hello Podofo users,
>
> I am developping a simple software. As a first basis, I would like to
> duplicate a pdf file that has been created by my printer (a scanned
> document). It consists of a file of 40 pages. It weights 10 Mb and each
> page of the pdf document is an image of a scanned document’s page.
>
> In my program, I am just copying each page from the original pdf (I load
> it in a PdfMemDocument) and then inserts it in another PdfMemDocument with
> InsertPage.
>
> I just do a Write() at the end.
>
> The file created at the end weighs more than 500 MB!! I searched a lot of
> topics. I saw one talking about disabling the embedded fonts. First, I do
> not know how to do this as I am not using any fonts and there is no options
> in the Write() function in the PdfMemDocument class. So I do not know where
> to specify not to embed fonts. Second, I am not convinced this is the
> problem as it is only images in the file and no strings attached. Isn’t it
> a problem of bad compression of the image? Then How should I proceed?
>
> I am really sorry for the dumb question but as you can see, I am a
> beginner in C++. I will really appreciate any kind of help.
>
> Christophe
>
>
Hello Christophe,
This is not a dumb question. I am dealing with this too, expect my
source documents are PDFs of federal and state tax forms (ex: USA Federal
941, Arizona UC-018, etc...). My resulting PDFs are significantly larger
than the originals. Further, if I open my derived PDF in Adobe Reader,
then save it, the resulting PDF is much smaller.
I have been analyzing both PDFs in "podofo-browser" to see if I can
determine why/how Adobe Reader makes it much smaller. Unfortunately, I
have not had success yet. Addressing this issue is not a super high
priority for me at this time.
I have considered writing a program that uses podofo and tinyxml2 to
dump a PDF as an XML document. I could then dump both PDFs and run them
through an XML diff utility.
Please Humor me and do an experiment. Open your huge PDF in adobe
reader, then save it. Does the file size shrink significantly?
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