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https://issues.apache.org/jira/browse/PDFBOX-4448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16755679#comment-16755679
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Tilman Hausherr commented on PDFBOX-4448:
-----------------------------------------
This is a known java
problem:[https://blog.idrsolutions.com/2012/05/avoid-transparency-when-printing-in-java/]
These weasy folks are painting the whole page with an empty pattern. WTF?
{code:java}
1 0 0 -1 0 841 cm
q
q
/Pattern cs
/p6 scn
/a0 gs
0 0 595 841 re
f
Q
0 0 0 rg
/a0 gs
BT
24 0 0 -24 62.25 94.86328 Tm
/f-0-0 1 Tf
(test) Tj
ET
Q
{code}
That pattern has a form XObject which has another form XObject which is just "q
Q" which does nothing.
> "Weasyprint" PDF's causing large memory spike
> ---------------------------------------------
>
> Key: PDFBOX-4448
> URL: https://issues.apache.org/jira/browse/PDFBOX-4448
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.13
> Environment: Windows 10 (x64)
> Reporter: Brett
> Priority: Major
> Labels: print, printing
> Attachments: test.pdf
>
>
> PDF's created with "[weasyprint|https://weasyprint.org/samples/]"; appear to
> cause a massive spike in memory usage when printing. This can be seen in
> their "invoice sample" provided on their page (causes a ~2.5gb average spike
> for a 47kb file) or the attached test pdf (causes a ~1.8gb average spike for
> a 6kb file).
> Trying to source the cause in the java print libraries seems to indicate it's
> a problem with "nonsolid colors" being used in the drawing of the page (which
> we are passing off to a PDFPrintable). On my windows machine, normally a
> ({{sun}}) {{WPrinterJob}} gets created for printing, but for some reason
> these pdf's end up using a Paint flagged as incompatible which [fails the job
> creation|https://github.com/frohoff/jdk8u-dev-jdk/blob/master/src/windows/classes/sun/awt/windows/WPrinterJob.java#L793].
> Trying to print with just pdfbox from the command line gives similar results
> in memory usage spiking to what we are seeing in our application: {{java -jar
> pdfbox-app-2.0.13.jar PrintPDF -printerName PDFCreator test.pdf}}
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