PDF copy some seal image disappear

[hbh112233abc]

Please provide all mandatory information!

Describe the bug (mandatory)

when I copy some pdf use issue 722 demo function, and the output pdf not found some seal images.

To Reproduce (mandatory)

the old pdf:
55CCF322DD7C4755894B85CDD238A9B5_37.pdf
output pdf:
55CCF322DD7C4755894B85CDD238A9B5_37_copy.pdf

the right side two red seal images disappear

demo code:

import fitz

src = fitz.open("old.pdf")
spage = src[0]
oldrot = spage.rotation
spage.setRotation(0)
doc = fitz.open()
npage = doc.newPage(width=spage.rect.width, height=spage.rect.height)
npage.showPDFpage(
    npage.rect,
    src,
    0,
)
npage.setRotation(oldrot)
doc.save("new.pdf")

Expected behavior (optional)

the red images is pdf sign seal image, I hope keep the images at the same location,the sign info remove is ok, I don't care.

Screenshots (optional)

old screenshot:

new screenshot:

not found the red seal images at the right side.

Your configuration (mandatory)

windows 10 64bit
python 3.7 32bit
pymupdf 1.18.17

Additional context (optional)

Add any other context about the problem here.

[JorjMcKie]

Thank you for submitting this. This is not a bug - it works as designed.

1. As documented, show_pdf_page() cannot copy annotations of the source page.
2. Form fields / widgets (including signatures) are a subtype of annotations, so they will not be included in the target page. The same is true for any other type of annotations - including links.

There is a solution for your case however:
You can convert the source PDF to a new PDF. The underlying MuPDF function converts annotations to normal page content.
Then use the resulting PDF as your source.
You should now see annotation images in the target, but they technically are no longer annotations (or widgets, signatures, etc.).
Here is a snippet for how to achieve this:

import fitz
import sys

src = fitz.open(sys.argv[1])  # input file
srcbytes = src.convert_to_pdf()  # convert to a new PDF
src.close()
src = fitz.open("pdf", srcbytes)  # open converted as PDF
spage = src[0]
oldrot = spage.rotation
spage.set_rotation(0)
doc = fitz.open()
npage = doc.new_page(width=spage.rect.width, height=spage.rect.height)
npage.show_pdf_page(
    npage.rect,
    src,
    0,
)
npage.set_rotation(oldrot)
doc.ez_save(__file__.replace(".py", ".pdf"))

[hbh112233abc]

good job! Thank you very much, your code is work, it's very good solution 👍👍👍