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https://issues.apache.org/jira/browse/PDFBOX-6249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18109965#comment-18109965
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Tilman Hausherr edited comment on PDFBOX-6249 at 8/31/26 4:52 PM:
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I was able to get this to run with some help from ChatGPT. So the rendering is
!image-2026-08-31-18-22-38-997.png!
And the log has
{quote}Using fallback DroidSansFallback for CID-keyed font MSungStd-Light-Acro
{quote}
What do you get as log output with your change?
was (Author: tilman):
I was able to get this to run with some help from ChatGPT. So the rendering is
!image-2026-08-31-18-22-38-997.png!
And the log has
{quote}Using fallback DroidSansFallback for CID-keyed font MSungStd-Light-Acro
{quote}
What do you get as log output with your change?
Btw I couldn't find the .pdfbox.cache file, where is it in that container?
> Non-embedded Adobe-GB1/CNS1/Japan1 fonts render as .notdef even when Noto CJK
> / Source Han fonts are installed
> --------------------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-6249
> URL: https://issues.apache.org/jira/browse/PDFBOX-6249
> Project: PDFBox
> Issue Type: Task
> Components: Rendering
> Reporter: Tim Allison
> Priority: Minor
> Attachments: cjk-cid-repro.pdf, image-2026-08-31-18-22-38-997.png
>
>
> I ran a rendering bake-off with pdftoppm vs PDFBox on the 1k pdfs in [digital
> corpora
> 0000.zip|https://digitalcorpora.s3.amazonaws.com/corpora/files/CC-MAIN-2021-31-PDF-UNTRUNCATED/zipfiles/0000-0999/0000.zip]
>
> There was a small handful of files where pdftoppm and pdfium were handling
> missing cjk fonts a bit better than PDFBox.
>
> Specifically:
> ||file||non-embedded CID font||collection||
> |0000000.pdf|MSungStd-Light-Acro|Adobe-CNS1|
> |0000063.pdf|STSongStd-Light-Acro|Adobe-GB1|
> |0000750.pdf|MSungStd-Light-Acro|Adobe-CNS1|
> |0000877.pdf|KozGoPro-Medium-Acro|Adobe-Japan1|
> |0000908.pdf|MSungStd-Light-Acro|Adobe-CNS1|
>
> I had Claude generate a small repro file (attached).
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