skip to navigation
skip to content

FontTools 3.22.0

Tools to manipulate font files

What is this?

fontTools is a library for manipulating fonts, written in Python. The project includes the TTX tool, that can convert TrueType and OpenType fonts to and from an XML text format, which is also called TTX. It supports TrueType, OpenType, AFM and to an extent Type 1 and some Mac-specific formats. The project has a MIT open-source licence.
Among other things this means you can use it free of charge.


FontTools requires Python 2.7, 3.4 or later.

The package is listed in the Python Package Index (PyPI), so you can install it with pip:

pip install fonttools

If you would like to contribute to its development, you can clone the repository from Github, install the package in ‘editable’ mode and modify the source code in place. We recommend creating a virtual environment, using virtualenv or Python 3 venv module.

# download the source code to 'fonttools' folder
git clone
cd fonttools

# create new virtual environment called e.g. 'fonttools-venv', or anything you like
python -m virtualenv fonttools-venv

# source the `activate` shell script to enter the environment (Un\*x); to exit, just type `deactivate`
. fonttools-venv/bin/activate

# to activate the virtual environment in Windows `cmd.exe`, do

# install in 'editable' mode
pip install -e .

TTX – From OpenType and TrueType to XML and Back

Once installed you can use the ttx command to convert binary font files (.otf, .ttf, etc) to the TTX xml format, edit them, and convert them back to binary format. TTX files have a .ttx file extension.

ttx /path/to/font.otf
ttx /path/to/font.ttx

The TTX application works can be used in two ways, depending on what platform you run it on:

  • As a command line tool (Windows/DOS, Unix, MacOSX)
  • By dropping files onto the application (Windows, MacOS)

TTX detects what kind of files it is fed: it will output a .ttx file when it sees a .ttf or .otf, and it will compile a .ttf or .otf when the input file is a .ttx file. By default, the output file is created in the same folder as the input file, and will have the same name as the input file but with a different extension. TTX will never overwrite existing files, but if necessary will append a unique number to the output filename (before the extension) such as Arial#1.ttf

When using TTX from the command line there are a bunch of extra options, these are explained in the help text, as displayed when typing ttx -h at the command prompt. These additional options include:

  • specifying the folder where the output files are created
  • specifying which tables to dump or which tables to exclude
  • merging partial .ttx files with existing .ttf or .otf files
  • listing brief table info instead of dumping to .ttx
  • splitting tables to separate .ttx files
  • disabling TrueType instruction disassembly

The TTX file format

The following tables are currently supported:

VORG, VVAR, ankr, avar, bsln, cidg, cmap, cvar, cvt, feat, fpgm,
fvar, gasp, gcid, glyf, gvar, hdmx, head, hhea, hmtx, kern, lcar,
loca, ltag, maxp, meta, mort, morx, name, opbd, post, prep, prop,
sbix, trak, vhea and vmtx

Other tables are dumped as hexadecimal data.

TrueType fonts use glyph indices (GlyphIDs) to refer to glyphs in most places. While this is fine in binary form, it is really hard to work with for humans. Therefore we use names instead.

The glyph names are either extracted from the CFF table or the post table, or are derived from a Unicode cmap table. In the latter case the Adobe Glyph List is used to calculate names based on Unicode values. If all of these methods fail, names are invented based on GlyphID (eg glyph00142)

It is possible that different glyphs use the same name. If this happens, we force the names to be unique by appending #n to the name (n being an integer number.) The original names are being kept, so this has no influence on a “round tripped” font.

Because the order in which glyphs are stored inside the binary font is important, we maintain an ordered list of glyph names in the font.

Other Tools

Commands for inspecting, merging and subsetting fonts are also available:


fontTools Python Module

The fontTools python module provides a convenient way to programmatically edit font files.

>>> from fontTools.ttLib import TTFont
>>> font = TTFont('/path/to/font.ttf')
>>> font
<fontTools.ttLib.TTFont object at 0x10c34ed50>

A selection of sample python programs is in the Snippets directory.

Optional Requirements

The fontTools package currently has no (required) external dependencies besides the modules included in the Python Standard Library. However, a few extra dependencies are required by some of its modules, which are needed to unlock optional features.

  • Lib/fontTools/ttLib/

    Module to compress/decompress WOFF 2.0 web fonts; it requires:

    • brotli: Python bindings of the Brotli compression library.
  • Lib/fontTools/ttLib/

    To better compress WOFF 1.0 web fonts, the following module can be used instead of the built-in zlib library:

    • zopfli: Python bindings of the Zopfli compression library.
  • Lib/fontTools/

    To display the Unicode character names when dumping the cmap table with ttx we use the unicodedata module in the Standard Library. The version included in there varies between different Python versions. To use the latest available data, you can install:

    • unicodedata2: unicodedata backport for Python 2.7 and 3.5 updated to the latest Unicode version 9.0. Note this is not necessary if you use Python 3.6 as the latter already comes with an up-to-date unicodedata.
  • Lib/fontTools/varLib/

    Module for finding wrong contour/component order between different masters. It requires one of the following packages in order to solve the so-called “minimum weight perfect matching problem in bipartite graphs”, or the Assignment problem:

    • scipy: the Scientific Library for Python, which internally uses NumPy arrays and hence is very fast;
    • munkres: a pure-Python module that implements the Hungarian or Kuhn-Munkres algorithm.
  • Lib/fontTools/misc/

    Advanced module for symbolic font statistics analysis; it requires:

    • sympy: the Python library for symbolic mathematics.
  • Lib/fontTools/

    To get the file creator and type of Macintosh PostScript Type 1 fonts on Python 3 you need to install the following module, as the old MacOS module is no longer included in Mac Python:

    • xattr: Python wrapper for extended filesystem attributes (macOS platform only).
  • Lib/fontTools/pens/

    Pen for drawing glyphs with Cocoa NSBezierPath, requires:

    • PyObjC: the bridge between Python and the Objective-C runtime (macOS platform only).
  • Lib/fontTools/pens/

    Pen for drawing glyphs with Qt’s QPainterPath, requires:

    • PyQt5: Python bindings for the Qt cross platform UI and application toolkit.
  • Lib/fontTools/pens/

    Pen to drawing glyphs as PNG images, requires:

    • reportlab: Python toolkit for generating PDFs and graphics.
  • Lib/fontTools/

    A GUI font inspector, requires one of the following packages:

    • PyGTK: Python bindings for GTK  2.x (only works with Python 2).
    • PyGObject : Python bindings for GTK 3.x and gobject-introspection libraries (also compatible with Python 3).


To run the test suite, you can do:

python test

If you have pytest, you can run the pytest command directly. The tests will run against the installed fontTools package, or the first one found in the PYTHONPATH.

You can also use tox to automatically run tests on different Python versions in isolated virtual environments.

pip install tox

Note that when you run tox without arguments, the tests are executed for all the environments listed in tox.ini’s envlist. In our case, this includes Python 2.7 and 3.6, so for this to work the python2.7 and python3.6 executables must be available in your PATH.

You can specify an alternative environment list via the -e option, or the TOXENV environment variable:

tox -e py27-nocov
TOXENV="py36-cov,htmlcov" tox

Development Community

TTX/FontTools development is ongoing in an active community of developers, that includes professional developers employed at major software corporations and type foundries as well as hobbyists.

Feature requests and bug reports are always welcome at

The best place for discussions about TTX from an end-user perspective as well as TTX/FontTools development is the mailing list. There is also a development mailing list for continuous integration notifications. You can also email Behdad privately at


The fontTools project was started by Just van Rossum in 1999, and was maintained as an open source project at In 2008, Paul Wise (pabs3) began helping Just with stability maintenance. In 2013 Behdad Esfahbod began a friendly fork, thoroughly reviewing the codebase and making changes at to add new features and support for new font formats.


In alphabetical order:

Olivier Berten, Samyak Bhuta, Erik van Blokland, Petr van Blokland, Jelle Bosma, Sascha Brawer, Tom Byrer, Frédéric Coiffier, Vincent Connare, Dave Crossland, Simon Daniels, Behdad Esfahbod, Behnam Esfahbod, Hannes Famira, Sam Fishman, Matt Fontaine, Yannis Haralambous, Greg Hitchcock, Jeremie Hornus, Khaled Hosny, John Hudson, Denis Moyogo Jacquerye, Jack Jansen, Tom Kacvinsky, Jens Kutilek, Antoine Leca, Werner Lemberg, Tal Leming, Peter Lofting, Cosimo Lupo, Masaya Nakamura, Dave Opstad, Laurence Penney, Roozbeh Pournader, Garret Rieger, Read Roberts, Guido van Rossum, Just van Rossum, Andreas Seidel, Georg Seifert, Miguel Sousa, Adam Twardoch, Adrien Tétar, Vitaly Volkov, Paul Wise.


Copyright (c) 1999-2004 Just van Rossum, LettError (
See LICENSE for the full license.

Copyright (c) 2000 All Rights Reserved.

Copyright (c) 1995-2001 Corporation for National Research Initiatives. All Rights Reserved.

Copyright (c) 1991-1995 Stichting Mathematisch Centrum, Amsterdam. All Rights Reserved.

Have fun!


3.22.0 (released 2018-02-04)

  • [subset] Support subsetting endchar acting as seac-like components in CFF (fixes #1162).
  • [feaLib] Allow to build from pre-parsed ast.FeatureFile object. Added tables argument to only build some tables instead of all (#1159, #1163).
  • [textTools] Replaced safeEval with ast.literal_eval (#1139).
  • [feaLib] Added option to the parser to not resolve include statements (#1154).
  • [ttLib] Added new ttCollection module to read/write TrueType and OpenType Collections. Exports a TTCollection class with a fonts attribute containing a list of TTFont instances, the methods save and saveXML, plus some list-like methods. The importXML method is not implemented yet (#17).
  • [unicodeadata] Added ot_tag_to_script function that converts from OpenType script tag to Unicode script code.
  • Added new designspaceLib subpackage, originally from Erik Van Blokland’s designSpaceDocument: NOTE: this is not yet used internally by varLib, and the API may be subject to changes (#911, #1110, LettError/designSpaceDocument#28).
  • Added new FontTools icon images (8ee7c32).
  • [unicodedata] Added script_horizontal_direction function that returns either “LTR” or “RTL” given a unicode script code.
  • [otConverters] Don’t write descriptive name string as XML comment if the NameID value is 0 (== NULL) (#1151, #1152).
  • [unicodedata] Add ot_tags_from_script function to get the list of OpenType script tags associated with unicode script code (#1150).
  • [feaLib] Don’t error when “enumerated” kern pairs conflict with preceding single pairs; emit warning and chose the first value (#1147, #1148).
  • [loggingTools] In CapturingLogHandler.assertRegex method, match the fully formatted log message.
  • [sbix] Fixed TypeError when concatenating str and bytes (#1154).
  • [bezierTools] Implemented cusp support and removed approximate_fallback arg in calcQuadraticArcLength. Added calcCubicArcLength (#1142).

3.21.2 (released 2018-01-08)

  • [varLib] Fixed merging PairPos Format1/2 with missing subtables (#1125).

3.21.1 (released 2018-01-03)

  • [feaLib] Allow mixed single/multiple substitutions (#612)
  • Added missing *.afm test assets to (#1137).
  • Fixed dumping SVG tables containing color palettes (#1124).

3.21.0 (released 2017-12-18)

  • [cmap] when compiling format6 subtable, don’t assume gid0 is always called ‘.notdef’ (1e42224).
  • [ot] Allow decompiling fonts with bad Coverage format number (1aafae8).
  • Change FontTools licence to MIT (#1127).
  • [post] Prune extra names already in standard Mac set (df1e8c7).
  • [subset] Delete empty SubrsIndex after subsetting (#994, #1118).
  • [varLib] Don’t share points in cvar by default, as it currently fails on some browsers (#1113).
  • [afmLib] Make poor old afmLib work on python3.

3.20.1 (released 2017-11-22)

  • [unicodedata] Fixed issue with script and script_extension functions returning inconsistent short vs long names. They both return the short four- letter script codes now. Added script_name and script_code functions to look up the long human-readable script name from the script code, and viceversa (#1109, #1111).

3.20.0 (released 2017-11-21)

  • [unicodedata] Addded new module fontTools.unicodedata which exports the same interface as the built-in unicodedata module, with the addition of a few functions that are missing from the latter, such as script, script_extension and block. Added a MetaTools/ script to download and parse data files from the Unicode Character Database and generate python modules containing lists of ranges and property values.
  • [feaLib] Added __str__ method to all ast elements (delegates to the asFea method).
  • [feaLib] Parser constructor now accepts a glyphNames iterable instead of glyphMap dict. The latter still works but with a pending deprecation warning (#1104).
  • [bezierTools] Added arc length calculation functions originally from pens.perimeterPen module (#1101).
  • [varLib] Started generating STAT table (8af4309). Right now it just reflects the axes, and even that with certain limitations: * AxisOrdering is set to the order axes are defined, * Name-table entries are not shared with fvar.
  • [py23] Added backports for redirect_stdout and redirect_stderr context managers (#1097).
  • [Graphite] Fixed some round-trip bugs (#1093).

3.19.0 (released 2017-11-06)

  • [varLib] Try set of used points instead of all points when testing whether to share points between tuples (#1090).
  • [CFF2] Fixed issue with reading/writing PrivateDict BlueValues to TTX file. Read the commit message 8b02b5a and issue #1030 for more details. NOTE: this change invalidates all the TTX files containing CFF2 tables that where dumped with previous verisons of fonttools. CFF2 Subr items can have values on the stack after the last operator, thus a CFF2Subr class was added to accommodate this (#1091).
  • [_k_e_r_n] Fixed compilation of AAT kern version=1.0 tables (#1089, #1094)
  • [ttLib] Added getBestCmap() convenience method to TTFont class and cmap table class that returns a preferred Unicode cmap subtable given a list of options (#1092).
  • [morx] Emit more meaningful subtable flags. Implement InsertionMorphAction

3.18.0 (released 2017-10-30)

  • [feaLib] Fixed writing back nested glyph classes (#1086).
  • [TupleVariation] Reactivated shared points logic, bugfixes (#1009).
  • [AAT] Implemented morx ligature subtables (#1082).
  • [reverseContourPen] Keep duplicate lineTo following a moveTo (#1080,
  • [varLib.mutator] Suport instantiation of GPOS, GDEF and MVAR (#1079).
  • [sstruct] Fixed issue with unicode_literals and struct module in old versions of python 2.7 (#993).

3.17.0 (released 2017-10-16)

  • [svgPathPen] Added an SVGPathPen that translates segment pen commands into SVG path descriptions. Copied from Tal Leming’s ufo2svg.svgPathPen
  • [reverseContourPen] Added ReverseContourPen, a filter pen that draws contours with the winding direction reversed, while keeping the starting point (#1071).
  • [filterPen] Added ContourFilterPen to manipulate contours as a whole rather than segment by segment.
  • [arrayTools] Added Vector class to apply math operations on an array of numbers, and pairwise function to loop over pairs of items in an iterable.
  • [varLib] Added support for building and interpolation of cvar table (f874cf6, a25a401).

3.16.0 (released 2017-10-03)

  • [head] Try using SOURCE_DATE_EPOCH environment variable when setting the head modified timestamp to ensure reproducible builds (#1063). See
  • [VTT] Decode VTT’s TSI* tables text as UTF-8 (#1060).
  • Added support for Graphite font tables: Feat, Glat, Gloc, Silf and Sill. Thanks @mhosken! (#1054).
  • [varLib] Default to using axis “name” attribute if “labelname” element is missing (588f524).
  • [merge] Added support for merging Script records. Remove unused features and lookups after merge (d802580, 556508b).
  • Added fontTools.svgLib package. Includes a parser for SVG Paths that supports the Pen protocol (#1051). Also, added a snippet to convert SVG outlines to UFO GLIF (#1053).
  • [AAT] Added support for ankr, bsln, mort, morx, gcid, and cidg.
  • [subset] Implemented subsetting of prop, opbd, bsln, lcar.

3.15.1 (released 2017-08-18)

  • [otConverters] Implemented __add__ and __radd__ methods on otConverters._LazyList that decompile a lazy list before adding it to another list or _LazyList instance. Fixes an AttributeError in the subset module when attempting to sum _LazyList objects (6ef48bd2, 1aef1683).
  • [AAT] Support the opbd table with optical bounds (a47f6588).
  • [AAT] Support prop table with glyph properties (d05617b4).

3.15.0 (released 2017-08-17)

  • [AAT] Added support for AAT lookups. The lcar table can be decompiled and recompiled; futher work needed to handle morx table (#1025).
  • [subset] Keep (empty) DefaultLangSys for Script ‘DFLT’ (6eb807b5).
  • [subset] Support GSUB/GPOS.FeatureVariations (fe01d87b).
  • [varLib] In models.supportScalars, ignore an axis when its peak value is 0 (fixes #1020).
  • [varLib] Add default mappings to all axes in avar to fix rendering issue in some rasterizers (19c4b377, 04eacf13).
  • [varLib] Flatten multiple tail PairPosFormat2 subtables before merging (c55ef525).
  • [ttLib] Added support for recalculating font bounding box in CFF and head tables, and min/max values in hhea and vhea tables (#970).

3.14.0 (released 2017-07-31)

  • [varLib.merger] Remove Extensions subtables before merging (f7c20cf8).
  • [varLib] Initialize the avar segment map with required default entries (#1014).
  • [varLib] Implemented optimal IUP optmiziation (#1019).
  • [otData] Add AxisValueFormat4 for STAT table v1.2 from OT v1.8.2 (#1015).
  • [name] Fixed BCP46 language tag for Mac langID=9: ‘si’ -> ‘sl’.
  • [subset] Return value from _DehintingT2Decompiler.op_hintmask (c0d672ba).
  • [cffLib] Allow to get TopDict by index as well as by name (dca96c9c).
  • [cffLib] Removed global isCFF2 state; use one set of classes for both CFF and CFF2, maintaining backward compatibility existing code (#1007).
  • [cffLib] Deprecated maxstack operator, per OpenType spec update 1.8.1.
  • [cffLib] Added missing default (-100) for UnderlinePosition (#983).
  • [feaLib] Enable setting nameIDs greater than 255 (#1003).
  • [varLib] Recalculate ValueFormat when merging SinglePos (#996).
  • [varLib] Do not emit MVAR if there are no entries in the variation store (#987).
  • [ttx] For -x option, pad with space if table tag length is < 4.

3.13.1 (released 2017-05-30)

  • [feaLib.builder] Removed duplicate lookups optimization. The original lookup order and semantics of the feature file are preserved (#976).

3.13.0 (released 2017-05-24)

  • [varLib.mutator] Implement IUP optimization (#969).
  • [_g_l_y_f.GlyphCoordinates] Changed __bool__() semantics to match those of other iterables (e46f949). Removed __abs__() (3db5be2).
  • [varLib.interpolate_layout] Added mapped keyword argument to interpolate_layout to allow disabling avar mapping: if False (default), the location is mapped using the map element of the axes in designspace file; if True, it is assumed that location is in designspace’s internal space and no mapping is performed (#950, #975).
  • [varLib.interpolate_layout] Import designspace-loading logic from varLib.
  • [varLib] Fixed bug with recombining PairPosClass2 subtables (81498e5, #914).
  • [cffLib.specializer] When copying iterables, cast to list (462b7f86).

3.12.1 (released 2017-05-18)

  • [pens.t2CharStringPen] Fixed AttributeError when calling addComponent in T2CharStringPen (#965).

3.12.0 (released 2017-05-17)

  • [cffLib.specializer] Added new specializer module to optimize CFF charstrings, used by the T2CharStringPen (#948).
  • [varLib.mutator] Sort glyphs by component depth before calculating composite glyphs’ bounding boxes to ensure deltas are correctly caclulated (#945).
  • [_g_l_y_f] Fixed loss of precision in GlyphCoordinates by using ‘d’ (double) instead of ‘f’ (float) as array.array typecode (#963, #964).

3.11.0 (released 2017-05-03)

  • [t2CharStringPen] Initial support for specialized Type2 path operators: vmoveto, hmoveto, vlineto, hlineto, vvcurveto, hhcurveto, vhcurveto and hvcurveto. This should produce more compact charstrings (#940, #403).
  • [Doc] Added Sphinx sources for the documentation. Thanks @gferreira (#935).
  • [fvar] Expose flags in XML (#932)
  • [name] Add helper function for building multi-lingual names (#921)
  • [varLib] Fixed kern merging when a PairPosFormat2 has ClassDef1 with glyphs that are NOT present in the Coverage (1b5e1c4, #939).
  • [varLib] Fixed non-deterministic ClassDef order with PY3 (f056c12, #927).
  • [feLib] Throw an error when the same glyph is defined in multiple mark classes within the same lookup (3e3ff00, #453).

3.10.0 (released 2017-04-14)

  • [varLib] Added support for building avar table, using the designspace <map> elements.
  • [varLib] Removed unused build(..., axisMap) argument. Axis map should be specified in designspace file now. We do not accept nonstandard axes if <axes> element is not present.
  • [varLib] Removed “custom” axis from the standard_axis_map. This was added before when glyphsLib was always exporting the (unused) custom axis.
  • [varLib] Added partial support for building MVAR table; does not implement gasp table variations yet.
  • [pens] Added FilterPen base class, for pens that control another pen; factored out addComponent method from BasePen into a separate abstract DecomposingPen class; added DecomposingRecordingPen, which records components decomposed as regular contours.
  • [TSI1] Fixed computation of the textLength of VTT private tables (#913).
  • [loggingTools] Added LogMixin class providing a log property to subclasses, which returns a logging.Logger named after the latter.
  • [loggingTools] Added assertRegex method to CapturingLogHandler.
  • [py23] Added backport for python 3’s types.SimpleNamespace class.
  • [EBLC] Fixed issue with python 3 zip iterator.

3.9.2 (released 2017-04-08)

  • [pens] Added pen to draw glyphs using WxPython GraphicsPath class:
  • [varLib.merger] Fixed issue with recombining multiple PairPosFormat2 subtables (#888)
  • [varLib] Do not encode gvar deltas that are all zeroes, or if all values are smaller than tolerance.
  • [ttLib] _TTGlyphSet glyphs now also have height and tsb (top side bearing) attributes from the vmtx table, if present.
  • [glyf] In GlyphCoordintes class, added __bool__ / __nonzero__ methods, and array property to get raw array.
  • [ttx] Support reading TTX files with BOM (#896)
  • [CFF2] Fixed the reporting of the number of regions in the font.

3.9.1 (released 2017-03-20)

  • [varLib.merger] Fixed issue while recombining multiple PairPosFormat2 subtables if they were split because of offset overflows (9798c30).
  • [varLib.merger] Only merge multiple PairPosFormat1 subtables if there is at least one of the fonts with a non-empty Format1 subtable (0f5a46b).
  • [varLib.merger] Fixed IndexError with empty ClassDef1 in PairPosFormat2 (aad0d46).
  • [varLib.merger] Avoid reusing Class2Record (mutable) objects (e6125b3).
  • [varLib.merger] Calculate ClassDef1 and ClassDef2’s Format when merging PairPosFormat2 (23511fd).
  • [macUtils] Added missing ttLib import (b05f203).

3.9.0 (released 2017-03-13)

  • [feaLib] Added (partial) support for parsing feature file comments # ... appearing in between statements (#879).
  • [feaLib] Cleaned up syntax tree for FeatureNames.
  • [ttLib] Added support for reading/writing CFF2 table (thanks to @readroberts at Adobe), and TTFA (ttfautohint) table.
  • [varLib] Fixed regression introduced with 3.8.0 in the calculation of NumShorts, i.e. the number of deltas in ItemVariationData’s delta sets that use a 16-bit representation (b2825ff).

3.8.0 (released 2017-03-05)

  • New pens: MomentsPen, StatisticsPen, RecordingPen, and TeePen.
  • [misc] Added new fontTools.misc.symfont module, for symbolic font statistical analysis; requires sympy (
  • [varLib] Added experimental fontTools.varLib.interpolatable module for finding wrong contour order between different masters
  • [varLib] designspace.load() now returns a dictionary, instead of a tuple, and supports <axes> element (#864); the ‘masters’ item was renamed ‘sources’, like the <sources> element in the designspace document
  • [ttLib] Fixed issue with recalculating head modified timestamp when saving CFF fonts
  • [ttLib] In TupleVariation, round deltas before compiling (#861, fixed #592)
  • [feaLib] Ignore duplicate glyphs in classes used as MarkFilteringSet and MarkAttachmentType (#863)
  • [merge] Changed the gasp table merge logic so that only the one from the first font is retained, similar to other hinting tables (#862)
  • [Tests] Added tests for the varLib package, as well as test fonts from the “Annotated OpenType Specification” (AOTS) to exercise ttLib’s table readers/writers (<>)

3.7.2 (released 2017-02-17)

  • [subset] Keep advance widths when stripping “.notdef” glyph outline in CID-keyed CFF fonts (#845)
  • [feaLib] Zero values now produce the same results as makeotf (#633, #848)
  • [feaLib] More compact encoding for “Contextual positioning with in-line single positioning rules” (#514)

3.7.1 (released 2017-02-15)

  • [subset] Fixed issue with --no-hinting option whereby advance widths in Type 2 charstrings were also being stripped (#709, #343)
  • [feaLib] include statements now resolve relative paths like makeotf (#838)
  • [feaLib] table name now handles Unicode codepoints beyond the Basic Multilingual Plane, also supports old-style MacOS platform encodings (#842)
  • [feaLib] correctly escape string literals when emitting feature syntax (#780)

3.7.0 (released 2017-02-11)

  • [ttx, mtiLib] Preserve ordering of glyph alternates in GSUB type 3 (#833).
  • [feaLib] Glyph names can have dashes, as per new AFDKO syntax v1.20 (#559).
  • [feaLib] feaLib.Parser now needs the font’s glyph map for parsing.
  • [varLib] Fix regression where GPOS values were stored as 0.
  • [varLib] Allow merging of class-based kerning when ClassDefs are different

3.6.3 (released 2017-02-06)

  • [varLib] Fix building variation of PairPosFormat2 (b5c34ce).
  • Populate defaults even for otTables that have postRead (e45297b).
  • Fix compiling of MultipleSubstFormat1 with zero ‘out’ glyphs (b887860).

3.6.2 (released 2017-01-30)

  • [varLib.merger] Fixed “TypeError: reduce() of empty sequence with no initial value” (3717dc6).

3.6.1 (released 2017-01-28)

  • [py23] Fixed unhandled exception occurring at interpreter shutdown in the “last resort” logging handler (972b3e6).
  • [agl] Ensure all glyph names are of native ‘str’ type; avoid mixing ‘str’ and ‘unicode’ in TTFont.glyphOrder (d8c4058).
  • Fixed inconsistent title levels in README.rst that caused PyPI to incorrectly render the reStructuredText page.

3.6.0 (released 2017-01-26)

  • [varLib] Refactored and improved the variation-font-building process.
  • Assembly code in the fpgm, prep, and glyf tables is now indented in XML output for improved readability. The instruction element is written as a simple tag if empty (#819).
  • [ttx] Fixed ‘I/O operation on closed file’ error when dumping multiple TTXs to standard output with the ‘-o -‘ option.
  • The unit test modules (* have been moved outside of the fontTools package to the Tests folder, thus they are no longer installed (#811).

3.5.0 (released 2017-01-14)

  • Font tables read from XML can now be written back to XML with no loss.
  • GSUB/GPOS LookupType is written out in XML as an element, not comment. (#792)
  • When parsing cmap table, do not store items mapped to glyph id 0. (#790)
  • [otlLib] Make ClassDef sorting deterministic. Fixes #766 (7d1ddb2)
  • [mtiLib] Added unit tests (#787)
  • [cvar] Implemented cvar table
  • [gvar] Renamed GlyphVariation to TupleVariation to match OpenType terminology.
  • [otTables] Handle gracefully empty VarData.Item array when compiling XML. (#797)
  • [varLib] Re-enabled generation of HVAR table for fonts with TrueType outlines; removed --build-HVAR command-line option.
  • [feaLib] The parser can now be extended to support non-standard statements in FEA code by using a customized Abstract Syntax Tree. See, for example, feaLib.builder_test.test_extensions and baseClass.feax (#794, fixes #773).
  • [feaLib] Added feaLib command to the ‘fonttools’ command-line tool; applies a feature file to a font. fonttools feaLib -h for help.
  • [pens] The T2CharStringPen now takes an optional roundTolerance argument to control the rounding of coordinates (#804, fixes #769).
  • [ci] Measure test coverage on all supported python versions and OSes, combine coverage data and upload to (#786)
  • [ci] Configured Travis and Appveyor for running tests on Python 3.6 (#785, 55c03bc)
  • The manual pages installation directory can be customized through FONTTOOLS_MANPATH environment variable (#799, fixes #84).
  • [Snippets] Added, for converting fonts from CFF to TrueType using the googlei18n/cu2qu module (#802)

3.4.0 (released 2016-12-21)

  • [feaLib] Added support for generating FEA text from abstract syntax tree (AST) objects (#776). Thanks @mhosken
  • Added agl.toUnicode function to convert AGL-compliant glyph names to Unicode strings (#774)
  • Implemented MVAR table (b4d5381)

3.3.1 (released 2016-12-15)

  • [setup] We no longer use to compute fonttools version from git metadata, as this has caused issues for some users (#767). Now we bump the version strings manually with a custom release command of script.

3.3.0 (released 2016-12-06)

  • [ttLib] Implemented STAT table from OpenType 1.8 (#758)
  • [cffLib] Fixed decompilation of CFF fonts containing non-standard key/value pairs in FontDict (issue #740; PR #744)
  • [py23] minor: in round3 function, allow the second argument to be None (#757)
  • The standalone sstruct and xmlWriter modules, deprecated since vesion 3.2.0, have been removed. They can be imported from the fontTools.misc package.

3.2.3 (released 2016-12-02)

  • [py23] optimized performance of round3 function; added backport for py35 math.isclose() (9d8dacb)
  • [subset] fixed issue with ‘narrow’ (UCS-2) Python 2 builds and --text/--text-file options containing non-BMP chararcters (16d0e5e)
  • [varLib] fixed issuewhen normalizing location values (8fa2ee1, #749)
  • [inspect] Made it compatible with both python2 and python3 (167ee60, #748). Thanks @pnemade

3.2.2 (released 2016-11-24)

  • [varLib] Do not emit null axes in fvar (1bebcec). Thanks @robmck-ms
  • [varLib] Handle fonts without GPOS (7915a45)
  • [merge] Ignore LangSys if None (a11bc56)
  • [subset] Fix subsetting MathVariants (78d3cbe)
  • [OS/2] Fix “Private Use (plane 15)” range (08a0d55). Thanks @mashabow

3.2.1 (released 2016-11-03)

  • [OS/2] fix checking fsSelection bits matching head.macStyle bits
  • [varLib] added --build-HVAR option to generate HVAR table for fonts with TrueType outlines. For CFF2, it is enabled by default.

3.2.0 (released 2016-11-02)

  • [varLib] Improve support for OpenType 1.8 Variable Fonts:
  • Implement GDEF’s VariationStore
  • Implement HVAR/VVAR tables
  • Partial support for loading MutatorMath .designspace files with varLib.designspace module
  • Add varLib.models with Variation fonts interpolation models
  • Implement GSUB/GPOS FeatureVariations
  • Initial support for interpolating and merging OpenType Layout tables (see varLib.interpolate_layout and varLib.merger modules)
  • [API change] Change version to be an integer instead of a float in XML output for GSUB, GPOS, GDEF, MATH, BASE, JSTF, HVAR, VVAR, feat, hhea and vhea tables. Scripts that set the Version for those to 1.0 or other float values also need fixing. A warning is emitted when code or XML needs fix.
  • several bug fixes to the cffLib module, contributed by Adobe’s @readroberts
  • The XML output for CFF table now has a ‘major’ and ‘minor’ elements for specifying whether it’s version 1.0 or 2.0 (support for CFF2 is coming soon)
  • [] remove undocumented/deprecated extra_path Distutils argument. This means that we no longer create a “FontTools” subfolder in site-packages containing the actual fontTools package, as well as the standalone xmlWriter and sstruct modules. The latter modules are also deprecated, and scheduled for removal in upcoming releases. Please change your import statements to point to from fontTools.misc import xmlWriter and from fontTools.misc import sstruct.
  • [scripts] Add a ‘fonttools’ command-line tool that simply runs fontTools.* sub-modules: e.g. fonttools ttx, fonttools subset, etc.
  • [hmtx/vmts] Read advance width/heights as unsigned short (uint16); automatically round float values to integers.
  • [ttLib/xmlWriter] add ‘newlinestr=None’ keyword argument to TTFont.saveXML for overriding os-specific line endings (passed on to XMLWriter instances).
  • [versioning] Use versioneer instead of setuptools_scm to dynamically load version info from a git checkout at import time.
  • [feaLib] Support backslash-prefixed glyph names.

3.1.2 (released 2016-09-27)

  • restore Makefile as an alternative way to build/check/install
  • update instructions for installing package from source, and for running test suite
  • NEWS: Change log was out of sync with tagged release

3.1.1 (released 2016-09-27)

  • Fix ttLibVersion attribute in TTX files still showing ‘3.0’ instead of ‘3.1’.
  • Use setuptools_scm to manage package versions.

3.1.0 (released 2016-09-26)

  • [feaLib] New library to parse and compile Adobe FDK OpenType Feature files.
  • [mtiLib] New library to parse and compile Monotype ‘FontDame’ OpenType Layout Tables files.
  • [voltLib] New library to parse Microsoft VOLT project files.
  • [otlLib] New library to work with OpenType Layout tables.
  • [varLib] New library to work with OpenType Font Variations.
  • [pens] Add ttGlyphPen to draw to TrueType glyphs, and t2CharStringPen to draw to Type 2 Charstrings (CFF); add areaPen and perimeterPen.
  • [ttLib.tables] Implement ‘meta’ and ‘trak’ tables.
  • [ttx] Add –flavor option for compiling to ‘woff’ or ‘woff2’; add --with-zopfli option to use Zopfli to compress WOFF 1.0 fonts.
  • [subset] Support subsetting ‘COLR’/’CPAL’ and ‘CBDT’/’CBLC’ color fonts tables, and ‘gvar’ table for variation fonts.
  • [Snippets] Add, for symbolic font statistics analysis;, a preliminary script for detecting interpolation errors; {merge,dump}
  • [classifyTools] Helpers to classify things into classes.
  • [CI] Run tests on Windows, Linux and macOS using Appveyor and Travis CI; check unit test coverage with; automatic deployment to PyPI on tags.
  • [loggingTools] Use Python built-in logging module to print messages.
  • [py23] Make round() behave like Python 3 built-in round(); define round2() and round3().

3.0 (released 2015-09-01)

  • Add Snippet scripts for cmap subtable format conversion, printing GSUB/GPOS features, building a GX font from two masters
  • TTX WOFF2 support and a -f option to overwrite output file(s)
  • Support GX tables: avar, gvar, fvar, meta
  • Support feat and gzip-compressed SVG tables
  • Upgrade Mac East Asian encodings to native implementation if available
  • Add Roman Croatian and Romanian encodings, codecs for mac-extended East Asian encodings
  • Implement optimal GLYF glyph outline packing; disabled by default

2.5 (released 2014-09-24)

  • Add a Qt pen
  • Add VDMX table converter
  • Load all OpenType sub-structures lazily
  • Add support for cmap format 13.
  • Add pyftmerge tool
  • Update to Unicode 6.3.0d3
  • Add pyftinspect tool
  • Add support for Google CBLC/CBDT color bitmaps, standard EBLC/EBDT embedded bitmaps, and SVG table (thanks to Read Roberts at Adobe)
  • Add support for loading, saving and ttx’ing WOFF file format
  • Add support for Microsoft COLR/CPAL layered color glyphs
  • Support PyPy
  • Support Jython, by replacing numpy with array/lists modules and removed it, pure-Python StringIO, not cStringIO
  • Add pyftsubset and Subsetter object, supporting CFF and TTF
  • Add to ttx args for -q for quiet mode, -z to choose a bitmap dump format

2.4 (released 2013-06-22)

  • Option to write to arbitrary files
  • Better dump format for DSIG
  • Better detection of OTF XML
  • Fix issue with Apple’s kern table format
  • Fix mangling of TT glyph programs
  • Fix issues related to mona.ttf
  • Fix Windows Installer instructions
  • Fix some modern MacOS issues
  • Fix minor issues and typos

2.3 (released 2009-11-08)

  • TrueType Collection (TTC) support
  • Python 2.6 support
  • Update Unicode data to 5.2.0
  • Couple of bug fixes

2.2 (released 2008-05-18)

  • ClearType support
  • cmap format 1 support
  • PFA font support
  • Switched from Numeric to numpy
  • Update Unicode data to 5.1.0
  • Update AGLFN data to 1.6
  • Many bug fixes

2.1 (released 2008-01-28)

  • Many years worth of fixes and features

2.0b2 (released 2002-??-??)

  • Be “forgiving” when interpreting the maxp table version field: interpret any value as 1.0 if it’s not 0.5. Fixes dumping of these GPL fonts:
  • Fixed ttx -l: it turned out this part of the code didn’t work with Python 2.2.1 and earlier. My bad to do most of my testing with a different version than I shipped TTX with :-(
  • Fixed bug in ClassDef format 1 subtable (Andreas Seidel bumped into this one).

2.0b1 (released 2002-09-10)

  • Fixed embarrassing bug: the master checksum in the head table is now calculated correctly even on little-endian platforms (such as Intel).
  • Made the cmap format 4 compiler smarter: the binary data it creates is now more or less as compact as possible. TTX now makes more compact data than in any shipping font I’ve tested it with.
  • Dump glyph names as a separate “GlyphOrder” pseudo table as opposed to as part of the glyf table (obviously needed for CFF-OTF’s).
  • Added proper support for the CFF table.
  • Don’t barf on empty tables (questionable, but “there are font out there…”)
  • When writing TT glyf data, align glyphs on 4-byte boundaries. This seems to be the current recommendation by MS. Also: don’t barf on fonts which are already 4-byte aligned.
  • Windows installer contributed bu Adam Twardoch! Yay!
  • Changed the command line interface again, now by creating one new tool replacing the old ones: ttx It dumps and compiles, depending on input file types. The options have changed somewhat.
  • The -d option is back (output dir)
  • ttcompile’s -i options is now called -m (as in “merge”), to avoid clash with dump’s -i.
  • The -s option (“split tables”) no longer creates a directory, but instead outputs a small .ttx file containing references to the individual table files. This is not a true link, it’s a simple file name, and the referenced file should be in the same directory so ttcompile can find them.
  • compile no longer accepts a directory as input argument. Instead it can parse the new “mini-ttx” format as output by “ttx -s”.
  • all arguments are input files
  • Renamed the command line programs and moved them to the Tools subdirectory. They are now installed by the install script.
  • Added OpenType support. BASE, GDEF, GPOS, GSUB and JSTF are (almost) fully supported. The XML output is not yet final, as I’m still considering to output certain subtables in a more human-friendly manner.
  • Fixed ‘kern’ table to correctly accept subtables it doesn’t know about, as well as interpreting Apple’s definition of the ‘kern’ table headers correctly.
  • Fixed bug where glyphnames were not calculated from ‘cmap’ if it was (one of the) first tables to be decompiled. More specifically: it cmap was the first to ask for a glyphID -> glyphName mapping.
  • Switched XML parsers: use expat instead of xmlproc. Should be faster.
  • Removed my UnicodeString object: I now require Python 2.0 or up, which has unicode support built in.
  • Removed assert in glyf table: redundant data at the end of the table is now ignored instead of raising an error. Should become a warning.
  • Fixed bug in hmtx/vmtx code that only occured if all advances were equal.
  • Fixed subtle bug in TT instruction disassembler.
  • Couple of fixes to the ‘post’ table.
  • Updated OS/2 table to latest spec.

1.0b1 (released 2001-08-10)

  • Reorganized the command line interface for and, they now behave more like “normal” command line tool, in that they accept multiple input files for batch processing.
  • and don’t silently override files anymore, but ask before doing so. Can be overridden by -f.
  • Added -d option to both and
  • Installation is now done with distutils. (Needs work for environments without compilers.)
  • Updated installation instructions.
  • Added some workarounds so as to handle certain buggy fonts more gracefully.
  • Updated Unicode table to Unicode 3.0 (Thanks Antoine!)
  • Included a Python script by Adam Twardoch that adds some useful stuff to the Windows registry.
  • Moved the project to SourceForge.

1.0a6 (released 2000-03-15)

  • Big reorganization: made ttLib a subpackage of the new fontTools package, changed several module names. Called the entire suite “FontTools”
  • Added several submodules to fontTools, some new, some older.
  • Added experimental CFF/GPOS/GSUB support to ttLib, read-only (but XML dumping of GPOS/GSUB is for now disabled)
  • Fixed hdmx endian bug
  • Added -b option to, it disables recalculation of bounding boxes, as requested by Werner Lemberg.
  • Renamed to and to
  • Use “.ttx” as file extension instead of “.xml”.
  • TTX is now the name of the XML-based format for TT fonts, and not just an application.


Never released

  • More tables supported: hdmx, vhea, vmtx

1.0a3 & 1.0a4

Never released

  • fixed most portability issues
  • retracted the “Euro_or_currency” change from 1.0a2: it was nonsense!

1.0a2 (released 1999-05-02)

  • binary release for MacOS
  • genenates full FOND resources: including width table, PS font name info and kern table if applicable.
  • added cmap format 4 support. Extra: dumps Unicode char names as XML comments!
  • added cmap format 6 support
  • now accepts true type files starting with “true” (instead of just 0x00010000 and “OTTO”)
  • ‘glyf’ table support is now complete: I added support for composite scale, xy-scale and two-by-two for the ‘glyf’ table. For now, component offset scale behaviour defaults to Apple-style. This only affects the (re)calculation of the glyph bounding box.
  • changed “Euro” to “Euro_or_currency” in the Standard Apple Glyph order list, since we cannot tell from the ‘post’ table which is meant. I should probably doublecheck with a Unicode encoding if available. (This does not affect the output!)

Fixed bugs: - ‘hhea’ table is now recalculated correctly - fixed wrong assumption about sfnt resource names

1.0a1 (released 1999-04-27)

  • initial binary release for MacOS
File Type Py Version Uploaded on Size
fonttools-3.22.0-py2.py3-none-any.whl (md5) Python Wheel py2.py3 2018-02-04 593KB (md5) Source 2018-02-04 2MB