Padovan Stefano created PDFBOX-4491:
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Summary: slow rendering for PDF
Key: PDFBOX-4491
URL: https://issues.apache.org/jira/browse/PDFBOX-4491
Project: PDFBox
Issue Type: Bug
Components: Rendering
Affects Versions: 2.0.14
Reporter: Padovan Stefano
Attachments: BUCH42 Pascu Guideline adapted.pdf, Screenshot 2019-03-19
at 18.09.12.png
When rendering the attached PDF page by page, it takes about 2 minutes 30
seconds on my machine.
Attached also the CPU sample of visualVM.
code is as simple as:
{code:java}
PDFRenderer pdfRenderer = new PDFRenderer(pdf);
for (int i = 0; i < pdf.getNumberOfPages(); i++) {
ImageIO.write(pdfRenderer.renderImage(i), "bmp", new File("image-" + i +
".bmp"));
}{code}
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