Cidfont F1 Upd Official

If you are looking for the specific string cidfont f1 in a research context, it is highly likely a rather than a standard academic term.

"Microsoft COCO: Common Objects in Context" cidfont f1

If you see cidfont f1 missing in a PDF, extract the original font (e.g., using pdffonts on Linux or Acrobat Pro) – it's likely a standard system font renamed. Re-embed the full font family for editing. If you are looking for the specific string