Luatexja

The LuaTeX-ja Package $VER$

Copyright (c) 2011--2026 The LuaTeX-ja project License: modified BSD (see COPYING)

LuaTeX-ja is a macro package for typesetting Japanese documents with LuaTeX. This package is highly affected by ASCII pTeX engine, but not a porting of it.

Note that this package is still alpha-stage; documentations are not complete and specifications are subject to change. Documentations are located at doc/luatexja-en.pdf (en), doc/luatexja-ja.pdf (ja).

LuaTeX-ja is developed on https://github.com/luatexja/luatexja. If you have questions or recognize bugs/have feature requests, we would like you to create an issue.

Installation

0. Please make sure that your TeX distribution is up-to-date. This version of LuaTeX-ja requires

   • LuaTeX 1.10.0 (or later)
   • luaotfload (v3.1 or later recommended)
   • adobemapping (Adobe CMap files)
   • LaTeX2e 2021-06-01 or later (if you want to use with LaTeX)
   • l3kernel about 2023-10-10 or later
   • etoolbox package
   • ltxcmds package, pdftexcmds package
   • Harano Aji fonts (https://github.com/trueroad/HaranoAjiFonts) more specifically, HaranoAjiMincho-Regular and HaranoAjiGothic-Medium

   Using LuaTeX-ja with Harfbuzz is not well tested. One might be able to typeset documents without an error, but with some unwanted results.

1. If you are using TeX Live 2021, you can install LuaTeX-ja via tlmgr.

2. If you must/want to install manually:

   a. Download the source archive from CTAN, or tagged as $VER$ in the Git repository by https://github.com/luatexja/luatexja/archive/refs/tags/$VER.zip

   b. Extract the archive and process following three files by LuaLaTeX to generate classes for Japanese typesetting: src/ltjclasses.ins src/ltjltxdoc.ins src/ltjsclasses.ins

   c. Put src/ into your TEXMF tree. An example location is TEXMF/tex/luatex/luatexja.

   If you are updating from old version, you MUST remove it before extracting the new version of LuaTeX-ja.

   d. You may need to update the filename database, by mktexlsr (or by another program).

Basic Usage

LuaTeX-ja supports both the plain format and LaTeX2e. Simply loading luatexja.sty by \input or \usepackage does the minimal setting.

• If you want to create Japanese-based documents, you can consider the use of ltj{article,book,report}.cls or ltjs{article,book,report}.cls.
• If you want to use functionality of the fontspec package with Japanese fonts, load luatexja-fontspec.sty. It defines control sequences such as \setmainjfont, \setsansjfont and \jfontspec, which can be used for specifying Japanese fonts.

Notes

• We don't recommend defining a Japanese font with HarfBuzz, by specifying "Renderer=..." (fontspec) or "mode=harf" (otherwise).

• This archive contains four .{dtx,ins} pairs: src/ltjclasses.{ins,dtx}, src/ltjltxdoc.{ins,dtx} src/ltjsclasses.{ins,dtx}, doc/luatexja.{ins,dtx} Former three pairs generate class files (see above), while the latter doc/luatexja.{ins,dtx} generates documentations. (You will need Kozuka fonts to regenerate documentaion PDFs.)

  No .{dtx,ins} pair generates .sty files of LuaTeX-ja package.

• src/*.{ins.dtx} are not needed in regular use.

• ltj-kinsoku_make.tex is removed in version 20200808.0. This file and ltj-kinsoku.lua are not used anymore. (Do not remove ltj-kinsoku.tex.)

Last commit date: $Format:%cd$