cpdf -list-fonts in.pdf
cpdf -print-font-table <font name> -print-font-table-page <n> in.pdf
cpdf -copy-font fromfile.pdf -copy-font-page <int>
-copy-font-name <name> in.pdf [<range>] -o out.pdf
cpdf -remove-fonts in.pdf -o out.pdf
cpdf -missing-fonts in.pdf
cpdf -embed-missing-fonts -gs <path to gs> in.pdf -o out.pdf
The -list-fonts operation prints the fonts in the document, one-per-line to standard output. For example:
1 /F245 /Type0 /Cleargothic-Bold /Identity-H 1 /F247 /Type0 /ClearGothicSerialLight /Identity-H 1 /F248 /Type1 /Times-Roman /WinAnsiEncoding 1 /F250 /Type0 /Cleargothic-RegularItalic /Identity-H 2 /F13 /Type0 /Cleargothic-Bold /Identity-H 2 /F16 /Type0 /Arial-ItalicMT /Identity-H 2 /F21 /Type0 /ArialMT /Identity-H 2 /F58 /Type1 /Times-Roman /WinAnsiEncoding 2 /F59 /Type0 /ClearGothicSerialLight /Identity-H 2 /F61 /Type0 /Cleargothic-BoldItalic /Identity-H 2 /F68 /Type0 /Cleargothic-RegularItalic /Identity-H 3 /F47 /Type0 /Cleargothic-Bold /Identity-H 3 /F49 /Type0 /ClearGothicSerialLight /Identity-H 3 /F50 /Type1 /Times-Roman /WinAnsiEncoding 3 /F52 /Type0 /Cleargothic-BoldItalic /Identity-H 3 /F54 /Type0 /TimesNewRomanPS-BoldItalicMT /Identity-H 3 /F57 /Type0 /Cleargothic-RegularItalic /Identity-H 4 /F449 /Type0 /Cleargothic-Bold /Identity-H 4 /F451 /Type0 /ClearGothicSerialLight /Identity-H 4 /F452 /Type1 /Times-Roman /WinAnsiEncoding
The first column gives the page number, the second the internal unique font name, the third the type of font (Type1, TrueType etc), the fourth the PDF font name, the fifth the PDF font encoding.
We can use cpdf to find out which characters are available in a given font, and to print the map between character codes, unicode codepoints, and Adobe glyph names. This is presently a best-effort service, and does not cover all font/encoding types.
We find the name of the font by using -list-fonts:
$ ./cpdf -list-fonts cpdfmanual.pdf 1 1 /F46 /Type1 /XYPLPB+NimbusSanL-Bold 1 /F49 /Type1 /MCBERL+URWPalladioL-Roma
We may then print the table, giving either the font’s name (e.g /F46) or basename (e.g /XYPLPB+NimbusSanL-Bold):
$ ./cpdf -print-font-table /XYPLPB+NimbusSanL-Bold -print-font-table-page 1 cpdfmanual.pdf 67 = U+0043 (C - LATIN CAPITAL LETTER C) = /C 68 = U+0044 (D - LATIN CAPITAL LETTER D) = /D 70 = U+0046 (F - LATIN CAPITAL LETTER F) = /F 71 = U+0047 (G - LATIN CAPITAL LETTER G) = /G 76 = U+004C (L - LATIN CAPITAL LETTER L) = /L 80 = U+0050 (P - LATIN CAPITAL LETTER P) = /P 84 = U+0054 (T - LATIN CAPITAL LETTER T) = /T 97 = U+0061 (a - LATIN SMALL LETTER A) = /a 99 = U+0063 (c - LATIN SMALL LETTER C) = /c 100 = U+0064 (d - LATIN SMALL LETTER D) = /d 101 = U+0065 (e - LATIN SMALL LETTER E) = /e 104 = U+0068 (h - LATIN SMALL LETTER H) = /h 105 = U+0069 (i - LATIN SMALL LETTER I) = /i 108 = U+006C (l - LATIN SMALL LETTER L) = /l 109 = U+006D (m - LATIN SMALL LETTER M) = /m 110 = U+006E (n - LATIN SMALL LETTER N) = /n 111 = U+006F (o - LATIN SMALL LETTER O) = /o 112 = U+0070 (p - LATIN SMALL LETTER P) = /p 114 = U+0072 (r - LATIN SMALL LETTER R) = /r 115 = U+0073 (s - LATIN SMALL LETTER S) = /s 116 = U+0074 (t - LATIN SMALL LETTER T) = /t
The first column is the character code, the second the Unicode codepoint, the character itself and its Unicode name, and the third the Adobe glyph name.
In order to use a font other than the standard 14 with -add-text, it must be added to the file. The font source PDF is given, together with the font’s resource name on a given page, and that font is copied to all the pages in the input file’s range, and then written to the output file.
The font is named in the output file with its basefont name, so it can be easily used with -add-text.
For example, if the file fromfile.pdf has a font /GHLIGA+c128 with the name /F10 on page 1 (this information can be found with -list-fonts), the following would copy the font to the file in.pdf on all pages, writing the output to out.pdf:
cpdf -copy-font fromfile.pdf -copy-font-name /F10
-copy-font-page 1 in.pdf -o out.pdf
Text in this font can then be added by giving -font /GHLIGA+c128. Be aware that due to the vagaries of PDF font handling concerning which characters are present in the source font, not all characters may be available, or cpdf may not be able to work out the conversion from UTF8 to the font’s own encoding. You may add -raw to the command line to avoid any conversion, but the encoding (mapping from input codes to glyphs) may be non-obvious and require knowledge of the PDF format to divine.
To remove embedded fonts from a document, use -remove-fonts. PDF readers will substitute local fonts for the missing fonts. The use of this function is only recommended when file size is the sole consideration.
cpdf -remove-fonts in.pdf -o out.pdf
The -missing-fonts operation lists any unembedded fonts in the document, one per line.
cpdf -missing-fonts in.pdf
The format is
Page number, Name, Subtype, Basefont, Encoding
The operation -embed-missing-fonts will process the file with gs (which must be installed) to embed missing fonts (where found):
cpdf -embed-missing-fonts -gs gs in.pdf -o out.pdf