Font made thicker when exporting to PDF

[Robert McTague]

Using the entire V.2 suite, Windows 11 OS.  Created slides natively and exporting to PDF; using Open Sans fonts. They look fine, on the program.  The fonts on the exported PDFs, however, are noticeably thicker; also with occasional errors (like lowercase "f" strangely becoming an "8"). I've reloaded my fonts two times on Windows; the "thick" output happens no matter what I've done (even using Open Sans Light, it mysteriously "thickens" the font).

[walt.farrell]

Welcome to the Serif Affinity forums.

Without a screenshot, and ideally a sample .afpub and .pdf document, I can only guess. But I will mention that some PDF viewers automatically make thin lines thicker, to enhance readability. Acrobat and Acrobat Reader do that optionally, and I think there are others. You might check the viewer you're using.

[Robert McTague]

Thank you, Walt. I'll endeavor to show a couple of screen shots later.  I thought of that and used another viewer to look at the PDFs and they looked the same. I will look into the viewing options on Adobe Acrobat.  /Robert

[Pauls]

we usually advise not sub-setting fonts - it can cause problems

[Robert McTague]

Ah, I did do that. I will unselect that option and see. Thanks!

/R