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https://issues.apache.org/jira/browse/PDFBOX-5971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17933440#comment-17933440
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Tres Finocchiaro edited comment on PDFBOX-5971 at 3/7/25 8:10 PM:
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I certainly will, however, I don't completely understand the bug.
When PDFBOX uses the dpi setting it prints properly, so I assume that there's a
test-case that passes and a test-case that fails. Can you help me understand
why the `-dpi 203` test-case does not reproduce this issue? Is it because the
graphics object is painted to within a non-print function?
was (Author: tresf):
I'm sorry, I don't completely understand the bug.
When PDFBOX uses the dpi setting it prints properly, so I assume that there's a
test-case that passes and a test-case that fails. Can you help me understand
why the `-dpi 203` test-case does not reproduce this issue? Is it because the
graphics object is painted to within a non-print function?
> Degraded quality on macOS when dpi is not provided
> --------------------------------------------------
>
> Key: PDFBOX-5971
> URL: https://issues.apache.org/jira/browse/PDFBOX-5971
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.33, 3.0.4 PDFBox
> Environment: openjdk 11.0.26
> macOS 15.3.1
> Reporter: Tres Finocchiaro
> Priority: Major
> Attachments: image-2025-03-07-13-34-55-860.png,
> minimal_example_TYPE_INT_RGB.png, pb_usps_sample-1.pdf
>
>
> When providing a `-dpi` to PDFBOX:
> {quote}Render into intermediate image with specific dpi and then print. Use
> -1 for automatic detection of printer resolution.
> {quote}
> When printing to a 203 DPI printer on macOS, the quality differences are
> quite different, with `-dpi 203` being significantly better quality. This
> issue was originally discovered in PDFBOX-5967 due to a downstream usage
> preferring `-dpi 203` for some older JDK versions due to a hard-crash
> (PDFBOX-2682).
>
> Good: (with DPI)
> {quote}{{java -jar ~/Downloads/pdfbox-app-2.0.33.jar PrintPDF -dpi 203
> -noColorOpt ~/Downloads/pb_usps_sample.pdf}}
> {quote}
> Not as good: (without DPI)
> {quote}{{java -jar ~/Downloads/pdfbox-app-2.0.33.jar PrintPDF -noColorOpt
> ~/Downloads/pb_usps_sample.pdf}}
> {quote}
> * I understand that this may be a result of something happening at the
> OS-level. If this is the case, any guidance as to how to isolate and provide
> a bug report for openjdk is greatly appreciated.
> * If there's a workaround that can be used as a stop-gap leveraging the
> PDFBOX API, that would also be greatly appreciated.
>
> [^pb_usps_sample.pdf]
> !image-2025-03-07-13-34-55-860.png!
>
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