Some elements of long table missing

[d-vesely]

I have a markdown with a long table. In the resulting PDF, some values are cut off. I have tried to track down to the cause of this issue via trial-and-error, but I am not sure. It definitely stems from the CSS, but it seems to be a combination of styles that can cause this issue. With the markdown, css and python code below, the issue can be reproduced. For example, in the CSS below, when removing the font-size for h1 and h2, all table elements are displayed in the PDF. Otherwise, some elements are cut off.

Markdown:

# Header

## Long Table

| File                                                                 | Result |
| -------------------------------------------------------------------- | ------ |
| 2025-06-27T10-53-25Z_bd237f0f-09d7-4d25-bda6-a3781b5e0e9a_input.json | **OK** |
| 2025-06-27T10-30-23Z_6a7a664a-c0ab-417b-b049-99ae14f4b336_input.json | **OK** |
| 2025-06-27T10-53-28Z_f264fc5c-ef02-4735-b3db-96f132021b85_input.json | **OK** |
| 2025-06-27T10-53-32Z_321f8db0-ba54-4854-a78c-24a540fef886_input.json | **OK** |
| 2025-06-27T10-53-36Z_ae1262cc-0f0a-4f63-ba36-8063904132bb_input.json | **OK** |
| 2025-06-27T10-53-39Z_830bee1b-50cc-40ff-aec3-8fbc5c85b515_input.json | **OK** |
| 2025-06-27T10-53-43Z_542ec173-d16a-4f74-a113-eb5a107a892f_input.json | **OK** |
| 2025-06-27T10-53-47Z_f1ff9131-71df-4ead-9d7c-52f09c053cd7_input.json | **OK** |
| 2025-06-27T10-53-50Z_be9dca91-d8a4-4e28-92f8-8931b6121686_input.json | **OK** |
| 2025-06-27T10-53-54Z_98a2524c-73b8-4ec1-894c-71a14cacc944_input.json | **OK** |
| 2025-06-27T10-53-58Z_177799f3-e828-4f6b-9b7c-74e0aa1671ea_input.json | **OK** |
| 2025-06-27T10-54-01Z_f90a472d-80fb-4441-bae4-4d3e46bd8c52_input.json | **OK** |
| 2025-06-27T10-54-05Z_75240c4b-5dbf-440b-8717-8cd546a1e7b2_input.json | **OK** |

TODO: Extend the table here and add more elements, e.g. 200.

h1 {
    font-size: 16pt;
    font-family: serif;
    color: maroon;
}

h2 {
    font-size: 13pt;
    font-family: serif;
    color: maroon;
}

table {
    font-size: 10pt;
    font-family: serif;
}

pdf = MarkdownPdf(toc_level=0)
pdf_data_path = Path("pdf_data")
style_file_path = Path(pdf_data_path, "style.css")

with style_file_path.open("r") as style_file:
    user_css = style_file.read()

with open("report.md", "r") as report_file:
    report_content = report_file.read()

pdf.add_section(
    Section(report_content),
    user_css=user_css,
)

out_buffer = BytesIO()
pdf.save(out_buffer)
out_buffer.seek(0)
report_pdf_path = Path("report.pdf")
with report_pdf_path.open("wb") as output_file:
    output_file.write(out_buffer.read())

[vb64]

It's normal for a table with fairly wide columns to no longer fit on a sheet of paper in PDF format.

There are several ways to fix this problem.

For example:

1. Reduce the font size for table elements with CSS (as in your example).

2. Select a larger paper size when creating the PDF section.

Section("Some text", paper_size="A3")

3. Use landscape orientation.

Section("Some text", paper_size="A4-L")

[d-vesely]

Thank you for your response.

I think you misunderstand the issue. It's not about the width of the columns, it's about the number of rows. When the number of rows gets too large, the table continues on the next page. That also happens in my example. However, in some cases, the table continues over multiple pages (in my case 3) and then abruptbly ends, with the remaining rows missing. When I remove the font-size requirements in the CSS (although other adaptations can work as well), all rows are correctly displayed over 6 pages.

What is interesting is, that the row elements are apparently there and can be copied, but they are not visible (I cannot attach a screenshot here). This works for tables with very narrow columns as well.