Cidfont F1 F2 F3 F4 Gratis -

CIDFont F1, F2, F3, and F4

The terms are not specific "free fonts" you can download from a library; rather, they are generic placeholders created by PDF software when an original font is not properly embedded or cannot be identified during the export process. Why You See These Names

Part 7: Frequently Asked Questions (FAQ)

CID fonts

It looks like you’re referencing (character identifier fonts, common in PostScript and PDF workflows), specifically variants like F1, F2, F3, F4 — and you’re looking for gratis (free) alternatives or sources. cidfont f1 f2 f3 f4 gratis

Use Ghostscript to re-embed

(command-line free tool):

Note: This creates CID‑keyed font files that can be embedded in PostScript or PDF. CIDFont F1, F2, F3, and F4 The terms

CMap Resources (Adobe’s own free CMap tables) – not fonts but mapping files.
Ghostscript distribution includes free Nimbus fonts converted to CID format (look in /usr/share/ghostscript/fonts/ for *.cid).
TeX Live – contains cidfmap configurations and freely redistributable CID fonts for dvips/pdftex.