I've been using Adobe Acrobat's "Add Text" feature to jot down notes on a scanned book that includes Tibetan, English, and Chinese. I'm noticing a frustrating issue where the majority of my Chinese notes, which are in the Adobe Song Std L font, appear as rectangles with crosses instead of showing the correct characters. The Tibetan and English notes are displaying just fine in the Microsoft Himalaya font. Strangely, when I copy and paste the problematic Chinese text into a text editor, it displays correctly. It feels like there might be an encoding problem. I've tried using Preflight to check for font issues, but Acrobat didn't find anything wrong. I even attempted to print the pages to force a re-encoding, but nothing has worked so far. Since I can't share screenshots due to restrictions, I'm really seeking advice on how to resolve this issue, as I need these notes to be readable for future reference. Any help would be appreciated!
2 Answers
It sounds like a font installation issue. Even if Adobe said there aren’t any, sometimes specific language fonts or packs need to be installed on your system for everything to display correctly. You might want to check if there’s a specific language pack available for Adobe Acrobat that you can install. Also, explore the settings in Adobe about using local fonts—enabling that can sometimes solve display problems.
Ah, the classic issue with rectangles appearing instead of characters! I've faced that after OCR-ing documents before, especially with large files. If you have a version of the document that’s meant for searching, maybe try using that for your notes? It can be a hassle to manage different formats, but sometimes it helps to keep one version for reading and another for searching through text.

Thanks a lot for the suggestion! I do have the language packs set up, but it’s worth checking the local font display option in Acrobat. Cheers!