If you're the one making the PDFs, ensure you always select the "Embed all fonts"
: These are generic, incremental labels assigned by the PDF generator. The Problem cidfont f1 f2 f3 f4 f5 f6 full
Output example:
Demystifying the "CIDFont F1 F2 F3" Mystery: Why Your PDF Looks Like Dots If you're the one making the PDFs, ensure
pdffonts -subst yourfile.pdf
Run:
Opening the file in the macOS Preview app and then selecting Export as PDF often clears the error and renders the text correctly. cidfont f1 f2 f3 f4 f5 f6 full