Title: Free Download: CID Font F1, F2, F3, F4 – Complete Collection

Convert to Outlines: If you are using Adobe Illustrator, try importing the PDF and using the "Transparency Flattener" to convert the text into shapes (outlines), which removes the need for the font file entirely. Why these names appear Impossible fonts to be found / Fontes impossíveis de achar

The Ultimate Guide to CID Fonts (F1–F4) and Safe Downloads

1. Deconstructing the Terminology

To understand what you are looking for, we must first break down the technical terms involved.

When a software program exports a PDF but fails to properly embed the original font's metadata, it assigns generic labels to the "virtual" fonts it creates. Super User F1, F2, F3, F4 are simply internal shorthand. In one document, might actually be Arial Bold