Printing a .pdf file becomes too large

[Aspectthermal]

I am using Acrobat Pro DC 2019.010. I have a received a .pdf file of 25MB (26 A3 sheets) and inserting a stamp & wanting to print again as .pdf.

But its size increases to 78MB with or without the stamp. Can anyone help here? Thanks in advance

[Dov Isaacs · Accepted solution]

Why not just use “save as” to create a new PDF file. “Refrying a PDF” (i.e., printing to the Adobe PDF PostScript printer driver instance) is strongly discouraged because it is a highly lossy procedure.

If what you are really trying to do is cause the stamp to become an actual part of the PDF file's content, use the Acrobat Pro Preflight Flatten annotations and form fields fixup and simply resave the PDF file. That should preserve the basic file size and quality.

          - Dov