Cid Font F1 F2 F3 F4 [better]

sed -i 's/CIDFont+F1/Arial/g' uncompressed.pdf

Today's standard for digital fonts is , but CID technology is not a relic. In fact, modern OpenType CJK fonts, like Adobe's Source Han Sans/Serif (also known as "Noto Sans/Serif CJK"), are built on a CID-based foundation. cid font f1 f2 f3 f4

If a subset (e.g., F2) was created without all the necessary glyphs, editing that text may show "This font does not contain all the characters required" 1.2.1 . 4. How to Fix or Work Around These Font Issues sed -i 's/CIDFont+F1/Arial/g' uncompressed

: They typically appear as "TrueType (CID)" or "Type 1 (CID)" with Identity-H encoding in Acrobat font properties. Common Mappings for F1–F4 : To understand why CID is so important,

This often "flattens" the font data and resolves rendering errors, making the file usable. :

To understand why CID is so important, we must look back at traditional PostScript Type 1 fonts. Type 1 fonts were designed for Western languages and are limited to a maximum of per font. This is perfectly fine for the Latin alphabet but entirely inadequate for Chinese, Japanese, or Korean, which have tens of thousands of characters.