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Monterey not displaying Japanese PDFs correctly

P

pavinder

macrumors regular
Original poster
Jan 16, 2009
169
113
I upgraded from Mojave to Monterey and now many (although not all) of my Japanese PDFs are not displaying properly.

The problem occurs in Quick Look from the Finder and also when I open the PDFs in Preview or drag them into Safari.

It's clearly an encoding issue because the files still appear fine if I drag them into Firefox or Chrome. And they're also still displaying fine in Quick Look/Preview on my other (Mojave) machine. They just seem to show as gobbledegook on the MacOS Monterey apps.

Any guidance to fix this would be appreciated. Thanks in advance.
 
P

pavinder

macrumors regular
Original poster
Jan 16, 2009
169
113
bogdanw said:
I've tested in Monterey 12.6 (21G115) with this document https://www.isas.jaxa.jp/missions/documents/files/doc_5.pdf from https://www.isas.jaxa.jp/missions/spacecraft/current/hayabusa2.html and it displays correctly in Safari and Preview.
Acrobat DC says the font is YuMincho-Regular and Font Book shows all YuMincho fonts as "Downloadable font asset"
How is it displayed on your system?
Click to expand...
Those are all fine on my system too.
I regularly browse and download various Japanese documents. As I say, it's only some of my Japanese PDFs displaying this encoding issue. But they're important documents so I do have to get them displaying properly!
 
bogdanw

bogdanw

macrumors 603
Mar 10, 2009
6,100
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If you can share an unimportant page that doesn’t work, we may try to find a solution.
From the example above, I suspect that there is something wrong with the embedded fonts in your documents.

How to Embed Fonts in a PDF | Adobe Acrobat

Use our guide to learn how to embed fonts in a PDF and bring your docs to life. We’ll take you through it step by step, using easy-to-follow instructions.
www.adobe.com
 
P

pavinder

macrumors regular
Original poster
Jan 16, 2009
169
113
bogdanw said:
If you can share an unimportant page that doesn’t work, we may try to find a solution.
From the example above, I suspect that there is something wrong with the embedded fonts in your documents.

How to Embed Fonts in a PDF | Adobe Acrobat

Use our guide to learn how to embed fonts in a PDF and bring your docs to life. We’ll take you through it step by step, using easy-to-follow instructions.
www.adobe.com
Click to expand...
Further tests show this is definitely a MacOS Monterey issue. A friend with Monterey verified that on his system too the same PDFs don't display properly on any native MacOS apps.
But on both his machine and mine, the files display fine in Acrobat Reader, any browser except Safari, various other PDF readers/editors etc. There's also no problem on previous MacOS versions. And there's no problem on Windows either.
 
bogdanw

bogdanw

macrumors 603
Mar 10, 2009
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pavinder said:
Further tests show this is definitely a MacOS Monterey issue.
Click to expand...
Without being able to reproduce the problem, as all pdf files with non-latin characters have been displayed correctly so far, I can offer only some generic advice:
1. Try to clear font cache with Onyx, Maintenance https://titanium-software.fr/en/applications.html , another utility or from Terminal https://osxdaily.com/2015/01/08/clear-font-caches-databases-mac-os-x/
2. Identify what fonts are not displayed correctly with Adobe Reader and use Validate fonts in Font Book or uninstall them and let macOS display them with the ones embedded in the documents.
3. Monterey has been released for a year, there must be some information on Japanese macOS forums about this problem.
 
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