Smart font optional features for Graphite and OpenType fonts

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This table displays the supported features in OpenType and Graphite fonts
It is a compilation by users and not an official document by the Document Foundation.
Please feel free to improve this page. Last update to this table was made at 13.10.2021

LibreOffice supports optional font features for the smart font technologies SIL Graphite and OpenType. In LibreOffice, users can access the optional font features by setting extended font names in the fonts dialog. You need to enter IDs from below table after the font name. A user interface for setting the features is implemented in version 6.2 (tdf#58941).


For example for the font "Linux Libertine G":

  • Linux Libertine G:smcp=1 (small caps)

or a combination of features:

  • Linux Libertine G:pnum=1&onum=1 (proportional old style numbers)
Example to set extended font name for small caps in the fonts dialog. The preview displays the result

Please note that most fonts only support a subset of following optional features!


Limitations of the current support is that there is no support for optional OpenType features in the OOXML export. Also, the ODF 1.2 standard does not yet provide OpenType optional features support. This feature is scheduled for the standard revision ODF 1.3.

On Graphite fonts

For Graphite fonts, please see following HowTo for the font features of Linux Libertine G and Linux Biolinum G and SIL Graphite fonts.

Smart fonts bundled with LibreOffice

On Linux, MS Windows and Apple macOS, a large number of smart fonts are installed by the operating system or other applications. Additionally, each LibreOffice installation bundles following smart fonts:

Please cross-check whether following fonts lists are correct!!

  • Linux Biolinum G
  • Linux Libertine Display G
  • Linux Libertine G
  • Noto Sans
  • Noto Serif
  • Source Code Pro
  • Source Sans Pro
  • Source Serif Pro

Following bundled fonts do not support optional smart font features: Caladea, Carlito, DejaVu Sans, DejaVu Sans Condensed, DejaVu Sans Mono, DejaVu Serif, DejaVu Serif Condensed, Gentium Basic, Gentium Book Basic, Liberation Mono, Liberation Sans, Liberation Sans Narrow, Liberation Serif, Noto font family other than Noto Sans and Noto Serif.

List of optional smart font features and their ID

Note: All Graphite font feature IDs are font specific, depending on which font you are used.

ID Description Further information and examples
aalt Access all alternates
abvf Above-base forms
abvm Above-base mark positioning
abvs Above-base substitutions
afrc Alternative fractions
akhn Akhands
algn Right-aligned numbers or footnote numbering signs only available in Graphite
arti Definitive article only available in Graphite
blwf Below-base forms
blwm Below-base mark positioning
blws Below-base substitutions
c2pc Capitals to petite capitals
c2sc Capitals to small capitals
calt Contextual alternates
caps Capitalized forms only available in Graphite
case Case-sensitive forms
ccmp Glyph composition/decomposition
cfar Conjunct form after Ro
circ Enclosed alphanumerics only available in Graphite
cjct Conjunct forms
clig Contextual ligatures
cpct Centered CJK punctuation
cpsp Capital spacing
cswh Contextual swash
curs Cursive positioning
cv01-cv99 Character variants
dash N-dash correction only available in Graphite
dbls Double-stroke letters only available in Graphite
dist Distances
dlig Discretionary ligatures
dnom Denominators
dtls Dotless forms
expt Expert forms
falt Final glyph on line alternates
fin2 Terminal forms #2
fin3 Terminal forms #3
fina Terminal forms
flac Flattened accent forms
foot Footnote numbering signs only available in Graphite
frac Fractions (diagonal fractions)
frsp French spacing only available in Graphite
fwid Full widths
grkn Numbers to Greek small letters only available in Graphite
hang Hanging punctuation only available in Graphite
half Half forms
haln Halant forms
halt Alternate half widths
hist Historical forms
hkna Horizontal Kana alternates
hlig Historical ligatures
hngl Hangul
hojo Hojo Kanji forms (JIS X 0212-1990 Kanji Forms)
hwid Half widths
init Initial forms
ingl Single substitution only available in Graphite
isol Isolated forms
ital Italics
itlc Italic correction only available in Graphite
jalt Justification alternates
jp04 JIS2004 forms
jp78 JIS78 forms
jp83 JIS83 forms
jp90 JIS90 forms
kern Kerning
lfbd Left bounds
liga Standard ligatures
ligc Ligature correction at hyphenation only available in Graphite
lith Extra switch for “Th” ligature only available in Graphite
litt Extra switch for “tt” ligature only available in Graphite
ljmo Leading Jamo forms
lnum Lining Figures
locl Localized forms in Latin
ltra Left-to-right alternates
ltrm Left-to-right mirrored forms
mark Mark positioning
med2 Medial forms #2
medi Medial forms
mgrk Mathematical Greek
minu True minus sign only available in Graphite
mkmk Mark to mark positioning
mset Mark positioning via substitution
name Number to number names only available in Graphite
nalt Alternate annotation forms
nfsp Non French spacing: greater spaces between sentences only available in Graphite
nlck NLC Kanji forms
nukt Nukta forms
numr Numerators
onum Oldstyle numbers / Text figures / Non-lining figures Text figures
opbd Optical bounds
ordn Ordinals
ornm Ornaments
palt Proportional alternate widths
para Regular parenthesis in Italic only available in Graphite
pcap Petite capitals
pkna Proportional Kana
pnum Proportional numbers
pref Pre-base forms
pres Pre-base substitutions
pstf Post-base forms
psts Post-base substitutions
pwid Proportional widths
quot Quotation mark correction only available in Graphite
qwid Quarter widths
rand Randomize
rand Required contextual alternates
rkrf Rakar forms
rlig Required ligatures
rphf Reph forms
rtbd Right bounds
rtla Right-to-left alternates
rtlm Right-to-left mirrored forms
ruby Ruby notation forms
rvrn Required variation alternates
sa01-99 for single salt items only available in Graphite
salt Stylistic alternatives
sinf Scientific inferiors
size Optical size
smcp Small capitals
smpl Simplified forms
ss01-20 Stylistic set 1 to 20
ssty Math script style alternates
stch Stretching glyph decomposition
subs Subscript
sups Superscript
swsh Swash
texm TeX-mode only available in Graphite
thou Thousand separation only available in Graphite
titl Titling
tjmo Trailing Jamo forms
tnam Traditional name forms
tnum Tabular figures
trad Traditional forms
twid Third widths
unic Unicase
valt Alternate vertical metrics
vari Variant only available in Graphite
vatu Vattu variants
vert Vertical writing
vhal Alternate vertical half metrics
vjmo Vowel Jamo forms
vkna Vertical Kana alternates
vkrn Vertical kerning
vpal Proportional alternate vertical metrics
vrt2 Vertical alternates and rotation
vrtr Vertical alternates for rotation
zero Slashed zero

See also