Here's some general information and guidance on your query:
When software (like Adobe Acrobat or Illustrator) exports a PDF and cannot correctly embed the original font, it creates these generic "CIDFont" labels as substitutes. Encoding Issues: cidfont f1 f2 f3 f4 gratis
If you only need to view or print the file (not edit the text), open it in Adobe Illustrator and use the Transparency Flattener to convert the text into shapes (outlines). Online Repair Tools: PDF Editor Here's some general information and guidance on your
| Tag often maps to → | Base Font Name | Type | Free (Gratis) Source | |---------------------|----------------|------|----------------------| | CIDFont+F1 | Helvetica (or Arial) | Sans-serif | GNU FreeFont, Liberation Sans | | CIDFont+F2 | Times-Roman (or Times New Roman) | Serif | GNU FreeFont, Liberation Serif | | CIDFont+F3 | Courier (or Courier New) | Monospace | GNU FreeFont, Liberation Mono | | CIDFont+F4 | Symbol (or ZapfDingbats) | Symbol/Icon | Standard PS core font (free) | Where to Find Gratis CID‑Keyed Fonts Since CID
Since CID fonts are a format (not a specific design), you can use free OpenType fonts and convert them, or find free native CID fonts. Here are legitimate free (gratis) sources:
Adobe once released the actual Helvetica, Times, Courier, Symbol as free downloads for Unix/X11. These are hard to find legally today. Instead, use Liberation.
If a PDF reports missing fonts like CIDFont+F1 and your viewer substitutes poorly: