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Posted to dev@pdfbox.apache.org by "Andreas Lehmkühler (Jira)" <ji...@apache.org> on 2022/01/15 11:42:00 UTC
[jira] [Closed] (PDFBOX-2690) Implement write support for compressed object streams
[ https://issues.apache.org/jira/browse/PDFBOX-2690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andreas Lehmkühler closed PDFBOX-2690.
--------------------------------------
Resolution: Duplicate
PDFBOX-4952 introduces support for compressed object streams in 3.0.0
> Implement write support for compressed object streams
> -----------------------------------------------------
>
> Key: PDFBOX-2690
> URL: https://issues.apache.org/jira/browse/PDFBOX-2690
> Project: PDFBox
> Issue Type: Improvement
> Components: Writing
> Affects Versions: 1.8.8, 1.8.9, 2.0.0
> Environment: PDFBox 1.8.8, Java8u25, Windows 8.1
> Reporter: Brian Liu
> Priority: Major
> Attachments: input2-after-save.pdf, input2.pdf
>
>
> I am using PDFBox 1.8.8 to manipulate existing PDF files. After saving a document, the output file becomes several times larger than the original. This is undesirable.
> *How to reproduce my problem:*
> In the following code, PDFBox simply loads an existing PDF and then save it. Nothing else is done. Yet the file size still becomes several times larger.
> {code}
> import java.io.*;
> import org.apache.pdfbox.pdmodel.*;
> import org.apache.pdfbox.exceptions.*;
> class Test
> {
> public static void main(String[] args) throws IOException, COSVisitorException {
> PDDocument document = PDDocument.load("input2.pdf");
> document.save("input2-after-save.pdf");
> document.close();
> }
> }
> {code}
> Attached are two sample PDF files. input2.pdf is an original, unprocessed PDF. input2-after-save.pdf is processed by the code above. After processing, file size increases from 416kB to 1.25MB.
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