Jason created PDFBOX-4527:
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Summary: 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
Affects Versions: 2.0.15
Environment: mac, linux
Reporter: Jason
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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