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Glemlyn
Participant
February 7, 2023
Question

PNG Dimensions change when converting to PDF

  • February 7, 2023
  • 1 reply
  • 3457 views

For some years now I have created PDFs from multiple, same size PNG files produced in Photoshop.  The dimensions of the PDF have always matched the PNG dimensions.

 

e.g. PNG = 1200 X 1200 @ 300 dpi produces a PDF that is 1200 x 1200

 

Yesterday - following my usual workflow - a PDF made from only 1200 x 1200 PNG files is coming out at 288 x 288.

 

Trying to troubleshoot, I opened an older "correct size" PDF I had made (1400 x 1400) and inserted a 1400 x 1400 PNG into it and this one image was reduced drastically in size within the PDF!

 

I believe I have double-checked all the import preferences and even uninstalled and reinstalled Acrobat but I still get the same result.  I am definitely selecting the large file option on import:

 

Any ideas why this is happening?

 

Thanks in advance!

This topic has been closed for replies.

1 reply

T
Test Screen Name
Legend
February 7, 2023

PDF sizes are measured in inches/mm, not in pixels (though some apps incorrectly report them that way). So, when you say "PDF that is 1200 x 1200", what do you actually mean? A screen shot showing how you measure it would be interesting. 

G
GlemlynAuthor
Participant
February 13, 2023

Any thoughts?  I'm still puzzled.

T
Test Screen Name
Legend
February 13, 2023

Hmm. Maybe Acrobat throws away the ppi. Not sure what's wrong with exporting as PDF. Right now, you make PNG, and combine them in Acrobat. Instead, make PDFs (each of one page) and combine the PDFs in Acrobat. 

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