NAME
ttx - tool for manipulating TrueType and OpenType fonts
SYNOPSIS
ttx [option ...] file ...
DESCRIPTION
ttx is a tool for manipulating TrueType and OpenType fonts. It can
convert TrueType and OpenType fonts to and from an XML-based format
called TTX. TTX files have a ‘.ttx’ extension.
For each file argument it is given, ttx detects whether it is a ‘.ttf’,
‘.otf’ or ‘.ttx’ file and acts accordingly: if it is a ‘.ttf’ or ‘.otf’
file, it generates a ‘.ttx’ file; if it is a ‘.ttx’ file, it generates a
‘.ttf’ or ‘.otf’ file.
By default, every output file is created in the same directory as the
corresponding input file and with the same name except for the extension,
which is substituted appropriately. ttx never overwrites existing files;
if neccesary, it appends a suffix to the output file name before the
extension, as in Arial#1.ttf.
General options
-h Display usage information.
-d dir Write the output files to directory dir instead of writing
every output file to the same directory as the corresponding
input file.
-v Be verbose. Write more messages to the standard output
describing what is being done.
-a Allow virtual glyphs ID’s on compile or decompile.
Dump options
The following options control the process of dumping font files (TrueType
or OpenType) to TTX files.
-l List table information. Instead of dumping the font to a TTX
file, display minimal information about each table.
-t table Dump table table. This option may be given multiple times to
dump several tables at once. When not specified, all tables
are dumped.
-x table Exclude table table from the list of tables to dump. This
option may be given multiple times to exclude several tables
from the dump. The -t and -x options are mutually exclusive.
-s Split tables. Dump each table to a separate TTX file and write
(under the name that would have been used for the output file
if the -s option had not been given) one small TTX file
containing references to the individual table dump files. This
file can be used as input to ttx as long as the referenced
files can be found in the same directory.
-i Don’t disassemble TrueType instructions. When this option is
specified, all TrueType programs (glyph programs, the font
program and the pre-program) are written to the TTX file as
hexadecimal data instead of assembly. This saves some time and
results in smaller TTX files.
-y n When decompiling a TrueType Collection (TTC) file, decompile
font number n, starting from 0.
Compilation options
The following options control the process of compiling TTX files into
font files (TrueType or OpenType):
-m fontfile
Merge the input TTX file file with fontfile. No more than one
file argument can be specified when this option is used.
-b Don’t recalculate glyph bounding boxes. Use the values in the
TTX file as is.
THE TTX FILE FORMAT
You can find some information about the TTX file format in
documentation.html. In particular, you will find in that file the list
of tables understood by ttx and the relations between TrueType GlyphIDs
and the glyph names used in TTX files.
EXAMPLES
In the following examples, all files are read from and written to the
current directory. Additionally, the name given for the output file
assumes in every case that it did not exist before ttx was invoked.
Dump the TrueType font contained in FreeSans.ttf to FreeSans.ttx:
ttx FreeSans.ttf
Compile MyFont.ttx into a TrueType or OpenType font file:
ttx MyFont.ttx
List the tables in FreeSans.ttf along with some information:
ttx -l FreeSans.ttf
Dump the ‘cmap’ table from FreeSans.ttf to FreeSans.ttx:
ttx -t cmap FreeSans.ttf
NOTES
On MS-Windows and MacOS, ttx is available as a graphical application to
which files can be dropped.
SEE ALSO
documentation.html
fontforge(1), ftinfo(1), gfontview(1), xmbdfed(1), Font::TTF(3pm)
AUTHORS
ttx was written by Just van Rossum 〈just@letterror.com〉.
This manual page was written by Florent Rougon 〈f.rougon@free.fr〉 for the
Debian GNU/Linux system based on the existing FontTools documentation.
It may be freely used, modified and distributed without restrictions.
May 18, 2004