% Free sample LaTeX file from 99helpers.com/file-types/tex
% UTF-8 text in several scripts. Build it with:  xelatex sample-unicode.tex
% pdflatex can't: it reads UTF-8 but only has 8-bit fonts, so Greek, Cyrillic,
% Japanese, Arabic and Hebrew need XeLaTeX or LuaLaTeX with OpenType fonts.

% 1. Languages: babel loads hyphenation, quotes and script rules for each one.
\documentclass[a4paper,11pt]{article}
\usepackage[bidi=default]{babel}
\babelprovide[import, main]{english}
\babelprovide[import]{greek}
\babelprovide[import]{russian}
\babelprovide[import]{japanese}
\babelprovide[import]{arabic}
\babelprovide[import]{hebrew}

% 2. Fonts: OpenType fonts installed on the system, chosen per language.
\babelfont{rm}{DejaVu Serif}
\babelfont{tt}{DejaVu Sans Mono}
\babelfont[japanese]{rm}{Noto Serif CJK JP}
\babelfont[arabic,hebrew]{rm}{DejaVu Sans}

\usepackage[margin=25mm]{geometry}
\usepackage[hidelinks]{hyperref}
\hypersetup{pdftitle={UTF-8 sample for XeLaTeX},
  pdfsubject={Free sample LaTeX file from 99helpers.com/file-types/tex}}
\setlength{\parindent}{0pt}
\setlength{\parskip}{6pt}

\begin{document}
\section*{UTF-8 in a \LaTeX{} source file}

% 3. Characters typed directly, no escape commands needed with XeLaTeX.
English with accents: café, naïve, Zürich, São Paulo, łódź, € 12,50.

% 4. Each \foreignlanguage switches hyphenation and, here, the font.
\foreignlanguage{greek}{Ελληνικά: Η γρήγορη καφέ αλεπού πηδά πάνω από τον σκύλο.}

\foreignlanguage{russian}{Русский: Съешь же ещё этих мягких французских булок.}

\foreignlanguage{japanese}{日本語：これは \LaTeX{} の文字コードのテストです。}

% 5. Right-to-left scripts: babel's bidi option sets the direction, and the
%    otherlanguage environment makes the whole paragraph run right to left.
\begin{otherlanguage}{arabic}
العربية: هذا ملف تجريبي.
\end{otherlanguage}

\begin{otherlanguage}{hebrew}
עברית: זהו קובץ לדוגמה.
\end{otherlanguage}

% 6. Maths is the same in every engine.
Maths: $\alpha^2 + \beta^2 = \gamma^2$ and $\int_0^1 x\,dx = \frac{1}{2}$.

\texttt{Free sample from 99helpers.com/file-types/tex}
\end{document}