Cid Font F1 F2 F3 F4 Instant

gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pdfwrite \ -sOutputFile=output.pdf \ -dSubsetFonts=false \ -dEmbedAllFonts=true \ input.pdf List all fonts in a PDF, showing if they are CID and their internal names:

Introduction If you have ever peeked under the hood of a PDF file—using a text editor, a preflight tool, or a font inspection utility—you might have stumbled upon cryptic labels like CID Font F1 , F2 , F3 , or F4 . To the uninitiated, these look like error codes or placeholder names. However, to prepress technicians, software developers, and document engineers, these identifiers are gateways to understanding how complex scripts (especially Asian languages like Chinese, Japanese, and Korean) are handled in digital typography. cid font f1 f2 f3 f4

8 0 obj % Descendant CIDFont << /Type /Font /Subtype /CIDFontType2 % TrueType-based CID font /BaseFont /AdobeMingStd-Light /CIDSystemInfo << /Registry (Adobe) /Ordering (CNS1) % Traditional Chinese (Taiwan/HK) /Supplement 4 >> /FontDescriptor 10 0 R /DW 1000 /W [ 1 [500] 30 [600] ] % Widths array >> endobj 8 0 obj % Descendant CIDFont &lt;&lt; /Type

pdffonts document.pdf Output example: