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https://issues.apache.org/jira/browse/PDFBOX-4527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16827755#comment-16827755
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Jason commented on PDFBOX-4527:
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Thanks [~tilman], I will follow on the other issue.
> poor conversion quality on this PDF when dpi is not high enough
> ---------------------------------------------------------------
>
> Key: PDFBOX-4527
> URL: https://issues.apache.org/jira/browse/PDFBOX-4527
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.15
> Environment: mac, linux
> Reporter: Jason
> Priority: Major
> Attachments: 400_dpi.png, 90_dpi.png, doc_with_conversion_issue.pdf
>
>
> I have attached a PDF. We try to convert it to image in PNG format. But the
> conversion quality is bad for this particular document. I have attached the
> conversion result of using 90 dpi and 400 dpi. The quality is good when dpi
> is high, e.g. 400. But bad for 90 dpi which normally generates good
> conversion quality for us for other documents.
> Could you please help us take a look? Thanks!
> Some sample code:
> {code:java}
> private static BufferedImage render(PDDocument pdfPage) throws IOException {
> PDFRenderer renderer = new PDFRenderer(pdfPage);
> BufferedImage image = renderer.renderImageWithDPI(0, 90, ImageType.RGB); //
> change dpi to very high can generate good result
> try {
> pdfPage.close();
> } catch (IOException ignored) {
> }
> return image;
> }
> {code}
> {color:#000080} {color}
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