Cidfont F1 F2 F3 F4 F5 F6 Full _top_ -

cpdf -replace-fonts "CIDFont+F2" "NotoSansCJKjp-Bold" in.pdf -o out.pdf

This changed the game. It allowed fonts to contain tens of thousands of characters without breaking the system. It was the backbone of professional publishing for decades. cidfont f1 f2 f3 f4 f5 f6 full