[PDFBOX-5809] PDDocument#importPage slowed down by factor 1300

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.31, 3.0.2 PDFBox
• Fix Version/s: 2.0.32, 3.0.3 PDFBox, 4.0.0
• Component/s: Utilities
• Assignee: Andreas Lehmkühler
• Reporter: Marcus Korinth
• Created: 26/Apr/24 09:45
• Updated: 24/Jul/24 16:02
• Resolved: 12/Jun/24 05:58

Description

We are using the PDDocument#importPage Method in our own splitter where we split pages from a SourceDocument to a TargetDocument. In order to do so we first extract the page by using the following code:

final PDPage sourcePage = sourceDocument.getPage(pageNumber);

Immediatly afterwards we are calling:

final PDPage targetPage = targetDocument.importPage(sourcePage);

This approach worked just fine with pdfbox 2.0.26.
We decided to upgrade to version 3.0.2 since it takles a lot of the problems.

Unfortunately the PDDocument#importPage method slowed down by around 1300 times. In Version 2.0.26 it took 15ms in an average. With the latest 3.0.2 it takes 20000 ms in average. That is a huge deal breaker as we usually have to split documents which have several thousand pages.

Note: The same applies when using PDDocument#addPage.
Note: The problem does not appear in 3.0.1. But we can't use that since it has other major problems which breaks our application.

I have prepared an example document with which you can replicate the issue. Due to the file size limitation I had to prepare a WeTransfer-Link for you: https://we.tl/t-lfN2wz7cAs

Issue Links

• is duplicated by: PDFBOX-5833 NullPointerException when calling Splitter.split() with pdf files generated by Keynote