Stamp annotation not being displayed in Acrobat

[tiago719]

I am currently developing a script that iterates over the pages of a PDF file, removes specified annotations, and generates a new PDF file as output.
To simplify the example presented below, I have only included code for iterating over the pages and writing them to the new PDF
Upon opening the resulting "new_sample.pdf" file with Acrobat, it can be observed that the stamp annotation that existed in the original file has been unexpectedly removed.

Code + PDF

This is a minimal, complete example that shows the issue:

from pypdf import PdfReader, PdfWriter

reader = PdfReader('sample.pdf')
writer = PdfWriter()
for page in reader.pages:
    # Some operations that will change the page object
    writer.add_page(page.get_object())

with open('new_sample.pdf', 'w+b') as f:
    writer.write(f.name)

sample.pdf

[pubpub-zz]

I recommend to use append() instead that add_page() that is pulling more data
as you are copying the whole document this will be more simple:

from pypdf import PdfWriter

writer = PdfWriter()
writer.append('sample.pdf')
writer.write('new_sample.pdf')

Can you check you are getting what you are expecting ?

[tiago719]

In order to modify the contents of the pages, a new PDF document cannot be created based solely on the original. As a result, I have to iterate through the pages, conduct relevant operations on the page object, and subsequently save the adjusted pages to a new PDF file.

[pubpub-zz]

oups to quick/tired 🥴. I've updated the code propolsa

[pubpub-zz]

In order to modify the contents of the pages, a new PDF document cannot be created based solely on the original. As a result, I have to iterate through the pages, conduct relevant operations on the page object, and subsequently save the adjusted pages to a new PDF file.

Once the page have been copied in, can your code modify them ?
you can use
for page in writer.pages

[pubpub-zz]

I close this issue and convert it as a discussion.

[tiago719]

I recommend to use append() instead that add_page() that is pulling more data as you are copying the whole document this will be more simple:

from pypdf import PdfWriter

writer = PdfWriter()
writer.append('sample.pdf')
writer.write('new_sample.pdf')

Can you check you are getting what you are expecting ?

This approach works, however I still have the same result in the new file - the stamp annotation is not there.

[pubpub-zz]

I've been a little to quick to convert it to discussion. I create an issue on last post