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https://issues.apache.org/jira/browse/PDFBOX-5953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17926340#comment-17926340
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Tilman Hausherr edited comment on PDFBOX-5953 at 9/28/26 6:42 AM:
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Some more explanation for you about fonts: to get the appearance for a field
widget annotation, the /DA entry is used, which is "/SimSun 11 Tf 0 g" (this is
the name, the size and the color). This font is searched in the Acroform
default resources, which is at {{{}Root/AcroForm/DR/Font/SimSun{}}}. Ideally
this font should be fully embedded, but it is not. PDFBox tries to find it in
the fonts on the operating system. And something goes wrong here.
was (Author: tilman):
Some more explanation for you about fonts: to get the appearance for a field
widget annotation, the /DA entry is used, which is "/SimSun 11 Tf 0 g" (this is
the name, the size and the color). This fount is searched in the Acroform
default resources, which is at {{Root/AcroForm/DR/Font/SimSun}}. Ideally this
font should be fully embedded, but it is not. PDFBox tries to find it in the
fonts on the operating system. And something goes wrong here.
> Missing Fields in Table During PDF to Image Conversion
> ------------------------------------------------------
>
> Key: PDFBOX-5953
> URL: https://issues.apache.org/jira/browse/PDFBOX-5953
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm, Rendering
> Affects Versions: 2.0.33
> Environment: Windows10, JDK17
> Reporter: Vincent Lee
> Priority: Blocker
> Attachments: 20251103 mail test2-repaired-by-Adobe Acrobat
> Reader.pdf, PdfFileTest.java, debugInfo.txt,
> image-2025-02-12-18-12-15-149.png, image-2025-02-12-18-12-24-291.png,
> screenshot-1.png, test.pdf, test2.pdf, test_page1.png, test_page10.png,
> test_page2.png, test_page3.png, test_page4.png, test_page5.png,
> test_page6.png, test_page7.png, test_page8.png, test_page9.png
>
>
> The PDF displays correctly in the MS Edge browser. However, after converting
> it to an image using PDFBox, some fields begin to appear blank starting from
> the seventh image.
> Interestingly, the first six images are generated correctly. After comparing,
> I noticed that some fonts starting from the seventh page of the PDF differ
> from the ones used earlier.
> I suspect that missing fonts may be the cause of the issue, but since there
> are no errors or warnings in the debug information, I’m unsure which fonts
> are missing.
>
> !image-2025-02-12-18-12-15-149.png!
>
> !image-2025-02-12-18-12-24-291.png!
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