# `JSTF`: Justification table

The `JSTF` table is an OpenType table.

class fontTools.ttLib.tables.J_S_T_F_.table_J_S_T_F_(tag=None)

  Bases: `BaseTTXConverter`

  Justification table

  The `JSTF` table contains glyph substitution and positioning data used to perform text justification.

  See also https://learn.microsoft.com/en-us/typography/opentype/spec/jstf

  mergeMap = {'table': <function mergeObjects>, 'tableTag': <function onlyExisting.<locals>.wrapper>}