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https://issues.apache.org/jira/browse/PDFBOX-5355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17470074#comment-17470074
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Tilman Hausherr commented on PDFBOX-5355:
-----------------------------------------
It's missing. Implementing this would need some understanding of the PDF
Structure Tree. Use PDFDebugger to see what I mean (chose "Show Internal
Structure" in the menu)
I had a look at the /K and /ParentTree trees and didn't find the page 3 that
has the image, only page 1 and 2. (But you wanted to remove page 1 anyway)
To learn a bit about the /K and /ParentTree trees, search for
{{.getParentTree()}} and {{.getK()}} and its usages in the sources. It's mostly
in the merge code, especially in the tests (look for {{checkElement}}).
I don't know if all there is to do is to remove all nodes that have a specific
page. It seemed to me that sometimes one page leads to another page (as a
child) so that one would be removed as well?!
> remove page from pdf with image violate conformance level pdf1.7
> ----------------------------------------------------------------
>
> Key: PDFBOX-5355
> URL: https://issues.apache.org/jira/browse/PDFBOX-5355
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.20, 3.0.0 JBIG2
> Reporter: lappa-lappa
> Priority: Major
> Attachments: pdf_result.pdf, with_image.pdf
>
>
> open [https://www.pdf-online.com/osa/validate.aspx] and upload
> "with_image.pdf" document, validation passed
> Execute following code (update absolute paths to files):
> {{{}byte[] withImage =
> readFile("C:/r/{}}}{{{}pdf/{}}}{{{}with_image.pdf");{}}}
> {{try (PDDocument boxDocument = Loader.loadPDF(withImage)) {}}
> {{ boxDocument.removePage(0);}}
> try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
> boxDocument.save(bos);
> {{ byte[] pdfBytes = bos.toByteArray();}}
> {{{} Files.write(Path.of("C:/r/{}}}{{{}pdf/{}}}{{{}pdf_result.pdf"),
> pdfBytes);{}}}
> }
> {{} catch (IOException e) {}}
> {{{} e.printS{}}}tackTrace();
> {{}}}
> {{upload pdf_result.pdf into [https://www.pdf-online.com/osa/validate.aspx] ,
> validation is not passed.}}
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