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Posted to dev@pdfbox.apache.org by "Padovan Stefano (JIRA)" <ji...@apache.org> on 2019/03/19 17:18:00 UTC
[jira] [Updated] (PDFBOX-4491) slow rendering for PDF
[ https://issues.apache.org/jira/browse/PDFBOX-4491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Padovan Stefano updated PDFBOX-4491:
------------------------------------
Issue Type: Improvement (was: Bug)
> slow rendering for PDF
> ----------------------
>
> Key: PDFBOX-4491
> URL: https://issues.apache.org/jira/browse/PDFBOX-4491
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 2.0.14
> Reporter: Padovan Stefano
> Priority: Major
> 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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