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https://issues.apache.org/jira/browse/PDFBOX-4491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr resolved PDFBOX-4491.
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Resolution: Fixed
Assignee: Tilman Hausherr
> 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
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: optimization, shading, shadingpattern
> Fix For: 2.0.15, 3.0.0 PDFBox
>
> 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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