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https://issues.apache.org/jira/browse/PDFBOX-3523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15548023#comment-15548023
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Vasiliy Sadokhin commented on PDFBOX-3523:
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I've attached files:
test.pdf
OldPdfUtils.java - the code that uses PDFBox 1.8
PdfUtils.java - the code that uses PDFBox 2.0.3
old_test.png - an image of test.pdf got from OldPdfUtils
test.png - an image of test.pdf got from PdfUtils
Resolution is the same 2125x2750 pixels
When I say "bigger" means result file size/bytes stream. When I say "slower" it
applies to actual "pdfRenderer.renderImageWithDPI" (new PDFBox) and
"page.convertToImage" (old PDFBox) calls without any other operations like
writing image via ImageIO or reading PDF file from input stream with
PDDocument.load method.
> PDFBox renders images 5 times slower and bigger
> -----------------------------------------------
>
> Key: PDFBOX-3523
> URL: https://issues.apache.org/jira/browse/PDFBOX-3523
> Project: PDFBox
> Issue Type: Improvement
> Affects Versions: 2.0.3
> Environment: Java version 1.8
> Ubuntu Linux&Windows 10
> Reporter: Vasiliy Sadokhin
> Labels: performance
> Attachments: OldPdfUtils.java, PdfUtils.java, old_test.png, test.pdf,
> test.png
>
>
> We recently migrated PDFBox from 1.8.13 to 2.0.3. We found that it becomes 5
> times slower to get a PDF page image and the image is 5 times bigger than
> PDFBox 1.8 did. For example, It took about 200ms and now it takes more than 1
> second, the result size was less 200Kb and it's 1Mb now.
> We specified BufferedImage.TYPE_3BYTE_BGR for PDFBox 1.8 and we have no way
> to do it with 2.x. It might be a reason.
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