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Page Size Limits

tcorbet
I am usually successful in producing single-page documents whose content
is a family tree diagram - lots of templated line drawing with minimal
text. [I can provide a jpeg image of valid and invalid results, if that
would help.]

My application never dies with any sort of diagnostic error that I have
been able to catch, and even when the document fails, if I look at the
contents via rups, I don't see any error/problem.

The symptom of a successful page, when viewed with Adobe Reader is a
page usually only able to be displayed in full at something less than
25% Zoom.  The pages have a parchment background that fills the page.

So, when the application fails, the Adobe Reader display is the right
size/proportion, but just a white blank -- no figures, no text, not even
the background parchment.

My trouble-shooting has all been based on the belief that there must be
some size limit, which I assumed would be the total number of pixels,
but what seems to be true is that there is an horizontal pixel limit
irrespective of height. If I limit the width to 14400, I will get the
correct right-clipped output.

Are there some page size limits I have missed in the documentation?
Is there some try-catch logic that ought to be applied that would tell
me when the limits have been exceeded for a page?

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mkl
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Re: Page Size Limits

mkl
tcorbet wrote
My trouble-shooting has all been based on the belief that there must be
some size limit, which I assumed would be the total number of pixels,
but what seems to be true is that there is an horizontal pixel limit
irrespective of height. If I limit the width to 14400, I will get the
correct right-clipped output.

Are there some page size limits I have missed in the documentation?
Is there some try-catch logic that ought to be applied that would tell
me when the limits have been exceeded for a page?
There indeed is a page size limit, it is documented in the PDF specification ISO 32000-1, Annex C (Implementation Limits) section C.2 (Architectural limits):

The minimum page size should be 3 by 3 units in default user space; the maximum should be 14,400 by 14,400 units. In versions of PDF earlier than 1.6, the size of the default user space unit was fixed at 1⁄72 inch, yielding a minimum of approximately 0.04 by 0.04 inch and a maximum of 200 by 200 inches. Beginning with PDF 1.6, the size of the unit may be set on a page-by-page basis; the default remains at 1/72 inch.
Regards,

Michael
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