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https://issues.apache.org/jira/browse/PDFBOX-4058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16322037#comment-16322037
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Bjorn Misseghers commented on PDFBOX-4058:
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First of all many thanks for the quick response! It is highly appreciated.
Do you have any idea when 2.0.9 will be released? And what about 3.0?
For now, I duplicated your fix in the 2.0.8 sources and made my own build,
which works.
However, I still can't get my head around the fact that we need close to 3G to
extract what seems a very basic image. Is there maybe a way we can use PDFBox
to detect PDF pages with high-memory consuming objects without actually having
to render them?
> High memory consumption when extracting image from PDF file
> -----------------------------------------------------------
>
> Key: PDFBOX-4058
> URL: https://issues.apache.org/jira/browse/PDFBOX-4058
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.5, 2.0.6, 2.0.7, 2.0.8
> Environment: windows 10 / Linux
> Reporter: Bjorn Misseghers
> Assignee: Tilman Hausherr
> Labels: regression
> Fix For: 2.0.9, 3.0.0 PDFBox
>
> Attachments: HighMemoryFootprint.pdf
>
>
> When rendering an image at 300 dpi from the included PDF, my java process
> uses a huge amount of memory.
> The document is only 45 Kb in size and contains 2 pages, my JVM is unable to
> extract even 1 page with 3G of memory. Setting Xmx to 4G works but is not the
> solution I want.
> The error occurs when calling PDFRenderer.renderImageWithDPI()
> I already tried tweaking the memory usage in my application to use a scratch
> file while loading the document as well as avoiding caching of XObjects as
> described here: https://pdfbox.apache.org/2.0/faq.html#outofmemoryerror
> These didn't work.
> The issue can be reproduced using the pdfbox-app utility:
> java -Xmx3G -jar pdfbox-app-2.0.8.jar PDFToImage
> HighMemoryFootprint.pdf -dpi 300 -color RGB -page 1
> What can not be changed?
> * 300 dpi will not be decreased.
> * Max Java memory will not be increased: 3GB is ridiculous for a 45kb PDF
> file.
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