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.\" ttx is not specific to any OS, but contrary to what groff_mdoc(7)
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.\" seems to imply, entirely omitting the .Os macro causes 'BSD' to
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.\" be used, so I give a zero-width space as its argument.
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.\" The "FontTools Manual" argument apparently has no effect in
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.\" groff 1.18.1. I think it is a bug in the -mdoc groff package.
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.Dt TTX 1 "FontTools Manual"
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.Nd tool for manipulating TrueType and OpenType fonts
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is a tool for manipulating TrueType and OpenType fonts. It can convert
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TrueType and OpenType fonts to and from an
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.Tn XML Ns -based format called
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detects whether it is a
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file and acts accordingly: if it is a
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By default, every output file is created in the same directory as the
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corresponding input file and with the same name except for the
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extension, which is substituted appropriately.
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never overwrites existing files; if neccesary, it appends a suffix to
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the output file name before the extension, as in
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.Bl -tag -width ".Fl t Ar table"
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Display usage information.
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Write the output files to directory
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instead of writing every output file to the same directory as the
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corresponding input file.
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Be verbose. Write more messages to the standard output describing what
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Allow virtual glyphs ID's on compile or decompile.
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The following options control the process of dumping font files
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(TrueType or OpenType) to
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.Bl -tag -width ".Fl t Ar table"
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List table information. Instead of dumping the font to a
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file, display minimal information about each table.
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This option may be given multiple times to dump several tables at
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once. When not specified, all tables are dumped.
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from the list of tables to dump. This option may be given multiple
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times to exclude several tables from the dump. The
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options are mutually exclusive.
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Split tables. Dump each table to a separate
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file and write (under the name that would have been used for the output
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option had not been given) one small
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file containing references to the individual table dump files. This
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file can be used as input to
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as long as the referenced files can be found in the same directory.
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.\" XXX: I suppose OpenType programs (exist and) are also affected.
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Don't disassemble TrueType instructions. When this option is specified,
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all TrueType programs (glyph programs, the font program and the
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pre-program) are written to the
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file as hexadecimal data instead of
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assembly. This saves some time and results in smaller
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Don't ignore decompilation errors, but show a full traceback and abort.
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.Ss "Compilation options"
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The following options control the process of compiling
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files into font files (TrueType or OpenType):
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.Bl -tag -width ".Fl t Ar table"
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argument can be specified when this option is used.
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Don't recalculate glyph bounding boxes. Use the values in the
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.Sh "THE TTX FILE FORMAT"
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You can find some information about the
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.Pa documentation.html .
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In particular, you will find in that file the list of tables understood by
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and the relations between TrueType GlyphIDs and the glyph names used in
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In the following examples, all files are read from and written to the
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current directory. Additionally, the name given for the output file
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assumes in every case that it did not exist before
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Dump the TrueType font contained in
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into a TrueType or OpenType font file:
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along with some information:
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.Dl ttx -l FreeSans.ttf
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.Dl ttx -t cmap FreeSans.ttf
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On MS\-Windows and MacOS,
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is available as a graphical application to which files can be dropped.
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.Pa documentation.html
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.An "Just van Rossum" Aq just@letterror.com .
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This manual page was written by
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.An "Florent Rougon" Aq f.rougon@free.fr
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for the Debian GNU/Linux system based on the existing FontTools
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documentation. It may be freely used, modified and distributed without
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