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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2019/04/17 16:31:00 UTC
[jira] [Commented] (PDFBOX-4516) PDFBox text and images are blurry
even after rendering with high DPI
[ https://issues.apache.org/jira/browse/PDFBOX-4516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16820273#comment-16820273 ]
Tilman Hausherr commented on PDFBOX-4516:
-----------------------------------------
That is a terrible PDF, instead of using fonts it uses images of text. Nevertheless I am surprised that java scales so poorly, despite that rendering hints for quality etc are enabled.
> PDFBox text and images are blurry even after rendering with high DPI
> --------------------------------------------------------------------
>
> Key: PDFBOX-4516
> URL: https://issues.apache.org/jira/browse/PDFBOX-4516
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.15
> Environment: Oracle Java 8 update125 on both Mac OS X and centos
> Reporter: Jack
> Priority: Critical
> Labels: bug
> Attachments: defaultDPI.png, highDPI.png, lowDPI.png, original.pdf
>
>
> I tried to render image with different DPI, found PDFBOX performs poorly on the input pdf file, I have to put a very high DPI to get a reasonable good image. Could anyone pls help take a look? Thanks
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