Languages like Chinese, Japanese, Korean (CJK), or highly technical documents require thousands of distinct characters. CID fonts solve this by separating the shapes of the characters (glyphs) from the character encoding map. What do F1, F2, F3, and F4 Mean?
Go to the official Adobe Help website and search for cid font f1 f2 f3 f4 free link download
When you see these names, it usually means the software that created the PDF failed to embed the original fonts. Placeholder Names: Languages like Chinese, Japanese, Korean (CJK), or highly