I am having issues using Confluence to export foreign language pages to PDF using the NotoSansCJK.ttc collection ("My TTC").
The documentation for creating PDFs claims that:
the only font files supported are true type fonts and true type collections. The accepted file extensions are *.ttf and *.ttc
but when I upload My TTC via the "PDF Export Language Support" interface, attempting to "Export PDF" generates the following error:
com.atlassian.confluence.importexport.ImportExportException: com.lowagie.text.DocumentException: /var/atlassian/application-data/confluence/fonts/NotoSansCJK.ttc is not a valid TTF file.
at com.atlassian.confluence.extra.flyingpdf.FlyingSaucerXmlToPdfConverter.useCustomFontIfConfigured(FlyingSaucerXmlToPdfConverter.java:214)caused by: com.lowagie.text.DocumentException: /var/atlassian/application-data/confluence/fonts/NotoSansCJK.ttc is not a valid TTF file.
at com.lowagie.text.pdf.EnumerateTTC.findNames(Unknown Source)
Any thoughts about why Confluence isn't handling this TTC file correctly?
N.B., the only other seemingly pertinent enduser setting, i.e. the PDF Stylesheet CSS, appears to be correct:
-fs-fit-images-to-width: 100% !important;
And things look OK in the backend Bandana database as well:
confluence=> select BANDANAVALUE from BANDANA where BANDANAKEY = 'com.atlassian.confluence.extra.flyingpdf.fontname';
It appears the .ttc file you're using may be corrupt.
You can try to create your own .ttc file from the invididual .ttf files and see if this works better, or try with a different .ttc file so we can narrow down the issue.
Let us know how it goes!
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