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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 an `MIT open-source
license `__.
| Among other things this means you can use it free of charge.
[User documentation] and
[developer documentation]
are available at [Read the Docs].
Installation
~~~~~~~~~~~~
FontTools requires [Python] 3.10
or later. We try to follow the same schedule of minimum Python version
support as
NumPy (see [NEP 29]).
The package is listed in the Python Package Index (PyPI), so you can
install it with [pip]:
Changelog
~~~~~~~~~
4.61.1 (released 2025-12-12)
----------------------------
- [otlLib] buildCoverage: return empty Coverage instead of None (#4003,
#4004).
- [instancer] bug fix in avar2 full instancing (#4002).
- [designspaceLib] Preserve empty conditionsets when serializing to XML
(#4001).
- [fontBu ilder] Fix FontBuilder ``setupOS2()`` default params globally
polluted (#3996, #3997).
- [ttFont] Add more typing annotations to ttFont, xmlWriter, sfnt,
varLib.models and others (#3952, #3826).
- Explicitly test and declare support for Python 3.14, even though we were
already shipping pre-built wheels for it (#3990).
4.60.2 (released 2025-12-09)
----------------------------
- **Backport release** Same as 4.61.0 but without "Drop support for EOL
Python 3.9" change to allow
downstream projects still on Python 3.9 to avail of the security fix for
CVE-2025-66034 (#3994, #3999).
4.61.0 (released 2025-11-28)
----------------------------
- [varLib.main]: **SECURITY** Only use basename(vf.filename) to prevent
path traversal attacks when
running fonttools varLib command, or code which invokes
``fonttools.varLib.main()``.
Fixes CVE-2025-66034, see:
https://github.com/fonttools/fonttools/security/advisories/GHSA-768j-98cg-p3fv.
- [feaLib] Sort BaseLangSysRecords by tag (#3986).
- Drop support for EOL Python 3.9 (#3982).
- [instancer] Support --remove-overlaps for fonts with CFF2 table (#3975).
- [CFF2ToCFF] Add --remove-overlaps option (#3976).
- [feaLib] Raise an error for rsub with NULL target (#3979).
- [bezierTools] Fix logic bug in curveCurveIntersections (#3963).
- [feaLib] Error when condition sets have the same name (#3958).
- [cu2qu.ufo] skip processing empty glyphs to support sparse kerning
masters (#3956).
- [unicodedata] Update to Unicode 17. Require ``unicodedata2 >= 17.0.0``
when installed with 'unicode' extra.
4.60.1 (released 2025-09-29)
----------------------------
- [ufoLib] Reverted accidental method name change in
``UFOReader.getKerningGroupConversionRenameMaps``
that broke compatibility with downstream projects like defcon (#3948,
#3947, robotools/defcon#478).
- [ufoLib] Added test coverage for getKerningGroupConversionRenameMaps
method (#3950).
- [subset] Don't try to subset BASE table; pass it through by default
instead (#3949).
- [subset] Remove empty BaseRecord entries in MarkBasePos lookups (#3897,
#3892).
- [subset] Add pruning for MarkLigPos and MarkMarkPos lookups (#3946).
- [subset] Remove duplicate features when subsetting (#3945).
- [Docs] Added documentation for the visitor module (#3944).
4.60.0 (released 2025-09-17)
----------------------------
- [pointPen] Allow reverseFlipped parameter of DecomposingPointPen to take
a ReverseFlipped
enum value to control whether/how to reverse contour direction of flipped
components, in addition to
|