我看到过 a4paper、a5paper、letterpaper 等选项，它们位于 \documentclass 后的方括号中，但我想要的是，一个文档的宽度为 8.25 英寸，高度为 10.75 英寸，另一个文档的宽度为 6 英寸，高度为 9 英寸。如何实现？
答案1
希望代码是不言自明的。
首先，
\documentclass{article}
\usepackage{blindtext}
\usepackage[paperheight=10.75in,paperwidth=8.25in,margin=1in,heightrounded,showframe]{geometry}
\begin{document}
\Blinddocument
\end{document}
第二：
\documentclass{article}
\usepackage{blindtext}
\usepackage[paperheight=9in,paperwidth=6in,top=1in,bottom=1in,right=1in,left=1in,heightrounded,showframe]{geometry}
\begin{document}
\Blinddocument
\end{document}
答案2
这是不使用包的方法：
\pdfpagewidth 8.25in
\pdfpageheight 10.75in
答案3
geometry 包版本 2020/01/02 v5.9 现在具有命令 ''heightrounded''，它可以为您计算 ''\textheight'' 中的整数行数。因此，建议如果您更改 ''\baselineskip''，请在调用 geometry 之前完成此操作：
\documentclass[11pt,openany]{book} % XeLatex. pdf output.
\author{Page Paperton}
\date{2021 Sep}
\title{A Custom Paper Size Template}
\usepackage{comment,kantlipsum,verbatim}
\usepackage{calc}
\usepackage{fontspec}
\setmainfont[Mapping=tex-text]{Minion Pro}
\newlength{\OriginalBaselineSkip}
\setlength{\OriginalBaselineSkip}{\baselineskip}
\usepackage{setspace}
\setstretch{1.05} % Set font and line spacing before `heightrounded' below.
\setlength{\paperwidth}{8.25in}
\setlength{\paperheight}{10.75in}
\usepackage[% showframe,
% left=0.8in, % 'left' means 'insidemargin'
right=1.446in, % 'right' means 'outsidemargin'
hmarginratio={2:3},
top=1.446in,
vmarginratio={1:1},
marginparwidth=0.6in,
marginparsep=0.125in,
heightrounded, % To make the text block height an integer number of lines.
driver=pdftex % Final output is pdf.
]{geometry}
% \usepackage{pdflscape}
% ------- \layout --------------------------------------------------- %
\usepackage{layout} % Use \layout to show page geometry %
% You can change \layout output metric here.. % (Heiko Oberdiek)
% in = 1/72.27 = 0.013837000 %
% picas = 12/72.27 = 0.166044002 %
% bp = 72/72.27 = 0.996264010 %
% mm = 25.4/72.27 = 0.351459804 %
\makeatletter %
\renewcommand*{\lay@value}[2] %
{ %
\strip@pt\dimexpr0.013837\dimexpr\csname#2\endcsname\relax\,in %
} %
\makeatother %
% ------------------------------------------------------------------- %
\usepackage{booktabs} % For nice looking tables \begin{tabular}{lcr...} ... \end{tabular}
\usepackage{siunitx} % Adds 'S' option for aligning table values at decimal point.
%%%%%%%%%% A macro to display parameters in other units: %%%%%%%%%%%%%%%%%%%
%%% Example useage: \convertto{in}{\pdfpagewidth}in %%% \the\pdfpagewidth also works.
\makeatletter
\def\convertto#1#2{\strip@pt\dimexpr #2*65536/\number\dimexpr 1#1 }
\makeatother
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[hyphens]{url}
\usepackage[hidelinks]{hyperref}
\raggedbottom % \flushbottom
\begin{document}
% \pagenumbering{Alph}
\maketitle
% \pagenumbering{alph}
\pagestyle{empty}
\tableofcontents
\thispagestyle{empty}
\pagenumbering{arabic}
\pagestyle{plain}
\chapter{Benevolent Misanthropy}
\section{Mishaps, Adventures, and Battling the Paper Sprites}
\kant[1-7]
\newlength{\insidemargin}
\setlength{\insidemargin}{1.0in}
\addtolength{\insidemargin}{\oddsidemargin}
\newlength{\outsidemargin}
\setlength{\outsidemargin}{\paperwidth}
\addtolength{\outsidemargin}{-\insidemargin}
\addtolength{\outsidemargin}{-\textwidth}
\newlength{\topmrgn}
\setlength{\topmrgn}{\topmargin}
\addtolength{\topmrgn}{\headheight}
\addtolength{\topmrgn}{1.0in}
\addtolength{\topmrgn}{\headsep}
\newlength{\bottommrgn}
\setlength{\bottommrgn}{\paperheight}
\addtolength{\bottommrgn}{-\topmrgn}
\addtolength{\bottommrgn}{-\textheight}
\newlength{\TextWidth}
\setlength{\TextWidth}{\textwidth}
\newlength{\TextHeight}
\setlength{\TextHeight}{\textheight}
\newlength{\LinesOfText}
\newlength{\buffer}
\setlength{\buffer}{\textheight}
\addtolength{\buffer}{-\topskip}
\setlength\LinesOfText{1pt*\ratio{\buffer}{\baselineskip}+1pt}
\newpage
% \begin{landscape}
\centering
\begin{tabular}{clSSS} \toprule
\multicolumn{1}{c}{Number} & Name & pt & in & mm \\ \midrule
1 & \verb|\paperwidth| & \convertto{pt}{\paperwidth} & \convertto{in}{\paperwidth} & {\convertto{mm}{\paperwidth}} \\
2 & \verb|\paperheight| & \convertto{pt}{\paperheight} & \convertto{in}{\paperheight} & {\convertto{mm}{\paperheight}} \\
3 & \verb|\textwidth| & \convertto{pt}{\TextWidth} & \convertto{in}{\TextWidth} & {\convertto{mm}{\TextWidth}} \\
4 & \verb|\textheight| & \convertto{pt}{\TextHeight} & \convertto{in}{\TextHeight} & {\convertto{mm}{\TextHeight}} \\
5 & \verb|\left| & \convertto{pt}{\insidemargin} & \convertto{in}{\insidemargin} & {\convertto{mm}{\insidemargin}} \\
6 & \verb|\right| & \convertto{pt}{\outsidemargin} & \convertto{in}{\outsidemargin} & {\convertto{mm}{\outsidemargin}} \\
7 & \verb|\top| & \convertto{pt}{\topmrgn} & \convertto{in}{\topmrgn} & {\convertto{mm}{\topmrgn}} \\
8 & \verb|\bottom| & \convertto{pt}{\bottommrgn} & \convertto{in}{\bottommrgn} & {\convertto{mm}{\bottommrgn}} \\
9 & \verb|\marginparwidth| & \convertto{pt}{\marginparwidth} & \convertto{in}{\marginparwidth} & {\convertto{mm}{\marginparwidth}} \\
10 & \verb|\marginparsep| & \convertto{pt}{\marginparsep} & \convertto{in}{\marginparsep} & {\convertto{mm}{\marginparsep}} \\
11 & \verb|\headheight| & \convertto{pt}{\headheight} & \convertto{in}{\headheight} & {\convertto{mm}{\headheight}} \\
12 & \verb|\headsep| & \convertto{pt}{\headsep} & \convertto{in}{\headsep} & {\convertto{mm}{\headsep}} \\
13 & \verb|\footskip| & \convertto{pt}{\footskip} & \convertto{in}{\footskip} & {\convertto{mm}{\footskip}} \\
\bottomrule
\end{tabular}
\flushleft
\verb|\baslineskip =| \the\OriginalBaselineSkip\ (Original)\par
\verb|\baslineskip =| \the\baselineskip\ (Current, after \verb|\setstretch|)\par
\verb|\topskip =| \the\topskip\par
The number of lines of text = \par
\verb|(\textheight-\topskip)/\baselineskip + 1 = | \convertto{pt}{\LinesOfText}
% \end{landscape}
\layout
\end{document}