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J
jrjarvinen
Participant
August 28, 2021
Question

Corrupted file?

  • August 28, 2021
  • 1 reply
  • 700 views

I suspect I have a pdf file that has a weird problem but I am not skilled enough to figure it out.

 

I can copy the file using utilities such as iText7 and pdfSharp but I get odd results when I try some other functions.  The functions I use work with other pdf files, just not this one.

 

Iin one case when I try to scale the file to 50% size, I get a blank page.  And when I try to use some graphic functions (such as var gfx = XGraphics.FromPdfPage(page); ), I get messages such as "Width and Height must be non-negative" although the properties of the page are standard 8.5" x 11".

 

Here is the link to file I am having problems with:

http://www.firish.com/temp/HandRecord1.pdf

(also attached if that is more convenient)

Thanks for any help or advice.

This topic has been closed for replies.

1 reply

T
Test Screen Name
Legend
August 28, 2021

This forum is for discussing Acrobat Reader, it isn't for support for non-Adobe products or libraries, nor for general PDF issues. I suggest you find the forums for those products.

 

The file is faulty, by the way, but some apps including Acrobat Reader will silently fix the fault. In posting this info may aid discussion of the dev tools: "I am told the file is faulty, although it may display fine, because it contains /MediaBox [0 792 612 0]".

T
Test Screen Name
Legend
August 28, 2021

I have done a little more study and I have a correction to my reply. The file is NOT faulty, but it is unusual. Please don't quote what I said, rather quote: "I am told the file contains /MediaBox [0 792 612 0], which is unusual, but that the PDF specification expects this to be normalized and work correctly". 

 

I write PDF software, and I can tell you that this is unusual enough that my app was wrong for 20 years before anyone noticed. So this info may help you get the support you need, or work around the issue.

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