upLaTeX online

Compile upLaTeX online in your browser: pLaTeX rebuilt around Unicode, so kanji outside JIS X 0208 typeset as typed.

First page of the upLaTeX example, compiled with upLaTeX

Open in LaTeX.to Download the example (zip)

Recommended Maintained, 2007
Magic comment: % !TeX program = uplatex on the first line of main.tex, which is how the example picks it under Auto.
License: Public domain, use freely.

Files:

main.tex

Download main.tex

% !TeX program = uplatex
\documentclass[11pt]{ujarticle}

\title{upLaTeX で広がる文字の世界}
\author{Unicode 対応の日本語 \TeX}
\date{\today}

\begin{document}
\maketitle

\section{はじめに}
upLaTeX は pLaTeX を内部で Unicode 化した組版システムです。
upLaTeX is an internally Unicode-aware version of pLaTeX.
pLaTeX の美しい日本語組版をそのまま受け継ぎながら、扱える文字の範囲を
大きく広げています。

\section{JIS X 0208 の枠を超えて}
従来の pLaTeX は JIS X 0208 の文字集合が基本でした。upLaTeX では文字を
Unicode で内部処理するため、その枠に収まらない漢字や記号も、そのまま入力
して組版できます。人名や地名に使われる異体字を扱うとき、この違いはとても
重要になります。

\section{多言語との共存}
日本語のとなりに、アクセント付きのラテン文字（café, naïve, Gauß）を混ぜても、
upLaTeX はそれぞれを適切に処理します。国際的な文書や、複数の言語を含む資料
を作るときに役立ちます。

\section{まとめ}
pLaTeX 譲りの組版品質と、Unicode による広い文字対応を両立できることが、
upLaTeX を選ぶ大きな理由です。

\end{document}

How to compile with upLaTeX on LaTeX.to

Everything runs in your browser: nothing to install, no login, no compile timeout.

Click Open in LaTeX.to. The example opens as a project with main.tex in the editor and its finished PDF in the preview.
Edit, then press Ctrl+Enter (Cmd+Enter on a Mac). The first compile downloads what this engine needs; after that a compile takes seconds.

What upLaTeX is

upLaTeX is pLaTeX with the engine's insides changed from JIS X 0208 to Unicode. Everything pTeX does for Japanese, the full-width spacing, the kinsoku line breaking, the small gap between a kanji and a Latin word, is untouched. What changes is how many characters exist: pLaTeX stops at about 7,000, upLaTeX (e-upTeX) typesets any character the font has, which matters the moment a name uses 髙 instead of 高 or 﨑 instead of 崎.

Like pLaTeX it writes a DVI file and the same dvipdfmx step makes the PDF, embedding the Harano Aji fonts; on LaTeX.to that step runs by itself. The example on this page is a ujarticle document that mixes Japanese with café and Gauß in one paragraph.

When to use it

Any new Japanese document. The classes are pLaTeX's with a u in front (ujarticle, ujreport, ujbook, the vertical utarticle family), or jsarticle with the uplatex class option, and Auto recognises both.
A name or a place name with a character outside JIS X 0208.
Japanese beside accented Latin text or another language in the same document.
Not for a template that was written for pLaTeX and has not been checked on upLaTeX: the two share fonts and packages, so changing the class line is usually safe, but compile once to confirm.

upLaTeX vs pLaTeX vs LuaLaTeX

pLaTeX: the older engine, still what most Japanese templates and offices expect.
upLaTeX: the same engine with the whole of Unicode, faster than LuaLaTeX on long documents, years of templates behind it, and free to choose for a new document.
LuaLaTeX with luatexja and its ltjsarticle class: writes PDF directly, loads OpenType fonts by name, and is where the LaTeX team's accessibility work will land.

All three read the same UTF-8 source; the class line and a few package names are what differ. The example pins its engine with % !TeX program = uplatex on the first line.

More engines: pLaTeX and all engines.