Cidfont F1 Normal Fixed

: This usually refers to the font's spacing characteristic. A fixed font, or more accurately in typography, a monospaced font, is one where every character has the same width. This is in contrast to variable-width fonts, where the characters have different widths.

It instructs the interpreter (e.g., Adobe PostScript RIP) to select a resource named f1 with the style attributes normal (upright, non-italic, non-oblique) and fixed (fixed-pitch/monospaced). cidfont f1 normal fixed

If you are dealing with a document showing these errors, several technical and "workaround" solutions are available: CID+ Fonts - Adobe Community : This usually refers to the font's spacing characteristic

When prompted by your PDF editor, try replacing CIDFont+F1 with Arial or Times New Roman to see if the text aligns correctly. or more accurately in typography

Here's a breakdown: