options:

-h, --help

show this help message and exit

--version

show program's version number and exit

--production-names

Rename glyphs with production names if available otherwise use uninames.

--no-production-names

--subset

Subset font using export flags set by glyphsLib

--no-subset

-s, --subroutinize

Optimize CFF table using compreffor (default) [DEPRECATED: use --optimize-cff option instead]

-S, --no-subroutinize

Input arguments (flags):

The following arguments are mutually exclusive (pick only one):

-g, --glyphs-path GLYPHS

Path to .glyphs source file

-u, --ufo-paths UFO [UFO ...]

One or more paths to UFO files

-m, --mm-designspace DESIGNSPACE

Path to .designspace file

Input arguments (positonal):

Alternatively, guess source format from filename extension

INPUTS

Either one *.designspace or *.glyphs file, or one or more *.ufo

Other input arguments:

--glyph-data GLYPHDATA

Custom GlyphData XML file with glyph info (production name, script, category, subCategory, etc.). Can be used more than once (for Glyphs sources only).

Output arguments:

-o, --output FORMAT [FORMAT ...]

Output font formats. Choose 1 or more from: ufo, otf, otf-cff2, ttf, ttf-interpolatable, otf-interpolatable, variable, variable-cff2. Default: otf, ttf. (No file paths).

--output-path OUTPUT_PATH

Output font file path. Only valid when the output is a single file (e.g. input is a single UFO or output is a single variable font)

--output-dir OUTPUT_DIR

Output folder. By default, output folders are created in the current working directory, grouping output fonts by format.

-i, --interpolate [INSTANCE_NAME]

Interpolate masters and generate all the instances defined. To only interpolate a specific instance (or instances) that match a given "name" attribute, you can pass as argument the full instance name or a regular expression. E.g.: -i "Noto Sans Bold"; or -i ".* UI Condensed". (for Glyphs or DesignSpace sources only).

--variable-fonts [VARIABLE_FONT_FILENAME]

Filter the list of variable fonts produced from the input Designspace file. By default all listed variable fonts are generated. To generate a specific variable font (or variable fonts) that match a given "filename" attribute, you can pass as argument the full filename or a regular expression. E.g.: --variable-fonts "MyFontVF_WeightOnly.ttf"; or --variable-fonts "MyFontVFItalic_.*.ttf".

-M, --masters-as-instances

Output masters as instances

--family-name FAMILY_NAME

Family name to use for masters, and to filter output instances

--round-instances

Apply integer rounding to all geometry when interpolating

--designspace-path DESIGNSPACE_PATH

Path to output designspace file (for Glyphs sources only).

--master-dir MASTER_DIR

Directory where to write master UFO. Default: "./master_ufo". If value is "{tmp}", a temporary directory is created and removed at the end (for Glyphs sources only).

--instance-dir INSTANCE_DIR

Directory where to write instance UFOs. Default: "./instance_ufo". If value is "{tmp}", a temporary directory is created and removed at the end (for Glyphs sources only).

--no-write-skipexportglyphs

Do not store the glyph export flags in the 'public.skipExportGlyphs' key of designspace/UFO lib, but use the old private glyph lib key 'com.schriftgestaltung.Glyphs.Export' (for Glyphs sources only).

--validate-ufo

Enable ufoLib validation on reading/writing UFO files. It is disabled by default

--check-compatibility

Check if the source files are interpolatable. It is disabled by default, but enabled when building variable fonts or what the 'Enforce Compatibility Check' custom parameter is set on a Glyphs file

--no-check-compatibility

Turns off the compatibility checker even when building variable fonts

--expand-features-to-instances

Resolves all include()s in the master feature file and writes the full feature file to all instance UFOs. Only valid when interpolating. Use if you share feature files of masters in external files, as instances can end up elsewhere.

--fea-include-dir FEA_INCLUDE_DIR

Overrides the default directory where to search for included feature files with relative paths. This only works when the input is a Designspace or UFOs, not from Glyphs at the moment.

--no-generate-GDEF

Do not auto-generate a GDEF table, but keep an existing one intact.

--save-ufo-as-zip

Deprecated. Use --ufo-structure=zip instead.

--ufo-structure {package,zip,json}

Select UFO format structure. Choose between: package, zip, json (default: package). NOTE: json export is unofficial/experimental.

--indent-json

Whether to format the JSON files created with --ufostructure=json as multiple lines with 2-space indentation. Default: single line, no indent.

Handling of contours:

--keep-overlaps

Do not remove any overlap.

--overlaps-backend BACKEND

Select library to remove overlaps. Choose between: booleanOperations, pathops (default: booleanOperations)

--keep-direction

Do not reverse contour direction when output is ttf or ttf-interpolatable

--ttf-curves {cu2qu,mixed,keep-quad,keep-cubic}

Controls conversion of cubic B??zier curves to TrueType quadratic splines. By default ('cu2qu'), all cubics are converted to quadratic (glyf v0). With 'mixed', cubics are converted to quadratic only when more economical. If 'keep-quad' or 'keep-cubic', cu2qu is skipped altogether and curves are compiled unchanged. NOTE: cubics in TTF use glyf v1 which is still draft!

-e, --conversion-error ERROR

Maximum approximation error for cubic to quadratic conversion measured in EM

-f, --flatten-components

Flatten nested components to single level.

-a, --autohint [AUTOHINT]

Run ttfautohint. Can provide arguments, quoted. By default, ttfautohint is run if the (.glyphs) source contains a 'TTFAutohint options' instance custom parameter. This option overrides that. See --noautohint to disable.

-A, --no-autohint

Do not run ttfautohint, even if source contains a 'TTFAutohint options' custom parameter

--cff-round-tolerance FLOAT

Restrict rounding of point coordinates in CFF table to only those floats whose absolute difference from their integral part is less than or equal to the tolerance. By default, all floats are rounded to integer (tolerance 0.5); 0 disables rounding.

--optimize-cff OPTIMIZE_CFF

0 disables all optimizations; 1 specializes the CFF charstring operators; 2 (default) also enables subroutinization

--subroutinizer {compreffor,cffsubr}

name of the library to use for compressing CFF charstrings. Choose between: compreffor, cffsubr. By default compreffor is used for CFF 1, and cffsubr for CFF2. NOTE: compreffor doesn't support CFF2.

--no-optimize-gvar

Do not perform IUP optimization on variable font's 'gvar' table. (only works with 'variable' TrueTypeflavored output)

--filter CLASS

string specifying a filter class to load, either built-in or from an external module, optionally initialized with the given keyword arguments. The class and module names are separated by '::'. The option can be repeated multiple times for each filter class. The option overrides the filters specified in the UFO lib. You can use an ellipsis --filter='...' to keep the latter and insert additional --filter(s), either before or after it.

--no-auto-use-my-metrics

Don't automatically set USE_MY_METRICS glyf component flags (0x0200).

--drop-implied-oncurves

drop on-curve points that can be implied when exactly in the middle of two off-curve points (TrueType only; default: False).

Handling of OpenType Layout:

--interpolate-binary-layout [MASTER_DIR]

Interpolate layout tables from compiled master binaries. Requires Glyphs or DesignSpace source.

--feature-writer CLASS

string specifying a feature writer class to load, either built-in or from an external module, optionally initialized with the given keyword arguments. The class and module names are separated by '::'. The option can be repeated multiple times for each writer class. A special value of 'None' will disable all automatic feature generation. The option overrides both the default ufo2ft writers and those specified in the UFO lib. You can use ellipsis --featurewriter='...' to keep the latter and insert additional --feature-writer(s) either before or after those.

--debug-feature-file FILE

Path were to dump OpenType features text to debug auto-generated features (kern, mark, mkmk, etc.).

--no-variable-features

Disable generation of variable FEA in ufo2ft when compiling VFs; instead build separate OT layout tables for each master and merge them with varLib.

--mti-source MTI_SOURCE

mtiLib feature definition .plist file path (use instead of FEA)

Logging arguments:

--timing

Print the elapsed time for each steps

--verbose LEVEL

Configure the logger verbosity level. Choose between: DEBUG, INFO, WARNING, ERROR, CRITICAL. Default: INFO