: This is a generic label (like F1, F2, F3) assigned by PDF creation software (e.g., InDesign, Acrobat) to a font subset that has been embedded in the document. It often stands in for common fonts like Arial or Times New Roman when they are exported with specific encoding.
That is a built-in fallback for when no real CIDFont is available. It activates the “CIDFallback” mechanism with Normal registry/ordering. cidfont f1 normal fixed
are arbitrary tags assigned by the PDF generator (e.g., Adobe Acrobat, XeLaTeX, or web-based export tools) when the original font cannot be fully embedded or named properly. : Often uses Identity-H (horizontal) or Identity-V : This is a generic label (like F1,
If the text is still not rendering, you can convert the "F1" text into vector outlines. Google Groups CIDFont+F1 issue - Adobe Community Google Groups CIDFont+F1 issue - Adobe Community "Initialize
"Initialize a CID-keyed font resource named 'f1', applying the properties of standard weight (Normal), upright posture, and monospaced width (Fixed)."
A very specific and technical topic!