Click on in the top menu bar, then select Preferences (or press Ctrl + K ). In the left categories sidebar, click on Page Display . Look under the "Rendering" section. Check the box for Use local fonts . Click OK , close the application, and reopen your PDF.
When a PDF generator creates a document but does not fully embed the original font files, it renames the remaining text placeholders with generic system aliases like . cidfont f1 f2 f3 f4 f5 f6 install