The features listed below are sorted in alphabetical order by tag name. Click on the feature tag to view feature description and implementation, or go to the feature descriptions page.
| Feature Tag |
Friendly Name |
| 'aalt' |
Access All Alternates |
| 'abvf' |
Above-base Forms |
| 'abvm' |
Above-base Mark Positioning |
| 'abvs' |
Above-base Substitutions |
| 'afrc' |
Alternative Fractions |
| 'akhn' |
Akhands |
| 'blwf' |
Below-base Forms |
| 'blwm' |
Below-base Mark Positioning |
| 'blws' |
Below-base Substitutions |
| 'calt' |
Contextual Alternates |
| 'case' |
Case-Sensitive Forms |
| 'ccmp' |
Glyph Composition / Decomposition |
| 'clig' |
Contextual Ligatures |
| 'cpsp' |
Capital Spacing |
| 'cswh' |
Contextual Swash |
| 'curs' |
Cursive Positioning |
| 'c2sc' |
Small Capitals From Capitals |
| 'c2pc' |
Petite Capitals From Capitals |
| 'dist' |
Distances
|
| 'dlig' |
Discretionary Ligatures |
| 'dnom' |
Denominators |
| 'expt' |
Expert Forms |
| 'falt' |
Final Glyph on Line Alternates |
| 'fin2' |
Terminal Forms #2 |
| 'fin3' |
Terminal Forms #3 |
| 'fina' |
Terminal Forms |
| 'frac' |
Fractions |
| 'fwid' |
Full Widths |
| 'half' |
Half Forms |
| 'haln' |
Halant Forms |
| 'halt' |
Alternate Half Widths |
| 'hist' |
Historical Forms |
| 'hkna' |
Horizontal Kana Alternates |
| 'hlig' |
Historical Ligatures |
| 'hngl' |
Hangul |
| 'hwid' |
Half Widths |
| 'init' |
Initial Forms |
| 'isol' |
Isolated Forms |
| 'ital' |
Italics |
| 'jalt' |
Justification Alternates |
| 'jp78' |
JIS78 Forms |
| 'jp83' |
JIS83 Forms |
| 'jp90' |
JIS90 Forms |
| 'kern' |
Kerning |
| 'lfbd' |
Left Bounds |
| 'liga' |
Standard Ligatures |
| 'ljmo' |
Leading Jamo Forms |
| 'lnum' |
Lining Figures |
| 'locl' |
Localized Forms |
| 'mark' |
Mark Positioning |
| 'med2' |
Medial Forms #2 |
| 'medi' |
Medial Forms |
| 'mgrk' |
Mathematical Greek |
| 'mkmk' |
Mark to Mark Positioning |
| 'mset' |
Mark Positioning via Substitution |
| 'nalt' |
Alternate Annotation Forms |
| 'nlck' |
NLC Kanji Forms |
| 'nukt' |
Nukta Forms |
| 'numr' |
Numerators |
| 'onum' |
Oldstyle Figures |
| 'opbd' |
Optical Bounds |
| 'ordn' |
Ordinals |
| 'ornm' |
Ornaments |
| 'palt' |
Proportional Alternate Widths |
| 'pcap' |
Petite Capitals |
| 'pnum' |
Proportional Figures |
| 'pref' |
Pre-Base Forms |
| 'pres' |
Pre-base Substitutions |
| 'pstf' |
Post-base Forms |
| 'psts' |
Post-base Substitutions |
| 'pwid' |
Proportional Widths |
| 'qwid' |
Quarter Widths |
| 'rand' |
Randomize |
| 'rlig' |
Required Ligatures |
| 'rphf' |
Reph Forms |
| 'rtbd' |
Right Bounds |
| 'rtla' |
Right-to-left alternates |
| 'ruby' |
Ruby Notation Forms |
| 'salt' |
Stylistic Alternates |
| 'sinf' |
Scientific Inferiors |
| 'size' |
Optical size |
| 'smcp' |
Small Capitals |
| 'smpl' |
Simplified Forms |
| 'ss01' |
Stylistic Set 1 |
| 'ss02' |
Stylistic Set 2 |
| 'ss03' |
Stylistic Set 3 |
| 'ss04' |
Stylistic Set 4 |
| 'ss05' |
Stylistic Set 5 |
| 'ss06' |
Stylistic Set 6 |
| 'ss07' |
Stylistic Set 7 |
| 'ss08' |
Stylistic Set 8 |
| 'ss09' |
Stylistic Set 9 |
| 'ss10' |
Stylistic Set 10 |
| 'ss11' |
Stylistic Set 11 |
| 'ss12' |
Stylistic Set 12 |
| 'ss13' |
Stylistic Set 13 |
| 'ss14' |
Stylistic Set 14 |
| 'ss15' |
Stylistic Set 15 |
| 'ss16' |
Stylistic Set 16 |
| 'ss17' |
Stylistic Set 17 |
| 'ss18' |
Stylistic Set 18 |
| 'ss19' |
Stylistic Set 19 |
| 'ss20' |
Stylistic Set 20 |
| 'subs' |
Subscript |
| 'sups' |
Superscript |
| 'swsh' |
Swash |
| '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 |
| '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 |
| 'zero' |
Slashed Zero |
