This is the current set of available keyboard shortcuts for the Overleaf editor.
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\usepackage[os=mac]{menukeys}
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% nifty commands by Paul Gaborit from http://tex.stackexchange.com/a/236891/226
\def\setmenukeyswin{\def\tw@mk@os{win}}
\def\setmenukeysmac{\def\tw@mk@os{mac}}
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\title{Overleaf Keyboard Shortcuts}
\author{Overleaf}
\date{Updated 31 May, 2023}
\begin{document}
\maketitle
\emph{Some keyboard shortcuts in this list may not be available on non-US keyboards or in vim/emacs modes. For example, some input methods on the Mac may use \keys{\Alt} (equivalent of {\setmenukeyswin\keys{\Alt}}) for accented characters input instead.}
\emph{Mac users may also want to refer to this list of common editor keyboard shortcuts on Mac:\\ \url{https://support.apple.com/en-us/HT201236\#text}}
\bigskip
\begin{xltabular}{\textwidth}{
>{\setmenukeyswin}c @{\hspace{2em}}
>{\setmenukeysmac}c @{\hspace{2em}}
>{\renewcommand\cellalign{cl}\RaggedRight\arraybackslash}X}
\toprule
\makecell{\sffamily Windows \faWindows\\\sffamily\textsc{gnu}/Linux \faLinux} & \sffamily Mac \faApple & \multicolumn{1}{c}{\sffamily Description \faComment}\\
\midrule
\endfirsthead
\footnotesize \faChevronCircleLeft\ (from previous page)\\[1em]
\toprule
\makecell{\sffamily Windows \faWindows\\\sffamily\textsc{gnu}/Linux \faLinux} & \sffamily Mac \faApple & \multicolumn{1}{c}{\sffamily Description \faComment}\\
\midrule
\endhead
\\[-1.5em]
\multicolumn{3}{r}{\footnotesize (continued next page) \faChevronCircleRight}
\endfoot
\bottomrule
\endlastfoot
%%%%%% Trigger compilation
\makecell{%
\keys{\ctrl + .}\\
\keys{\ctrl + S}\\
\keys{\ctrl + Enter}\\
(vim) \texttt{:w}} &
\makecell{%
\keys{\ctrl + .}\\
\keys{\cmd + S}\\
\keys{\cmd + Enter}\\
(vim) \texttt{:w}} &
Trigger compilation
\\*
\midrule
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%% Toggle comment on selected lines
\keys{\ctrl + /} & \keys{\cmd + /} & Toggle \texttt{\%} comment on selected line(s). May not work on some non-US keyboards.
\\*
\midrule
%%%%%%%%%%%%%%%%%%%
%%%%%%%%%% Delete line
\keys{\ctrl + D} & \keys{\cmd + D} & Delete current line
\\*
\midrule
%%%%%%%%% Auto-complete
\makecell{
\keys{\ctrl + \SPACE}
\\ \keys{\Alt + \SPACE}
} &
\makecell{
\keys{\ctrl + \SPACE}
\\ \keys{\Alt + \SPACE}
} &
Open auto-complete.\newline\rule{0pt}{3ex}%
Use \keys{\arrowkeyup} \keys{\arrowkeydown} \keys{Tab} to select candidate, and \keys{Enter} to insert.
\\*
\midrule
%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%% Advanced reference search
\makecell{
\keys{\ctrl + \SPACE}
\\ \keys{\Alt + \SPACE}
} &
\makecell{
\keys{\ctrl + \SPACE}
\\ \keys{\Alt + \SPACE}
} &
Advanced reference search; activated in citation commands e.g.~\texttt{\string\cite\{...\}}
\\*
\midrule
%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% Folding
% Toggle fold: F2 on both Windows/Linux and macOS. (same as Ace)
% Unfold all: Alt-Shift-0 on Windows/Linux and Opt-Shift-0 on macOS. (same as Ace)
% Fold all: Alt-Shift-1 on Windows/Linux and Opt-Shift-1 on macOS.
\keys{F2} & \keys{F2} & Toggle fold \\
\midrule
\keys{\Alt + \shift + 0} & \keys{\Alt + \shift + 0} & Unfold all \\
\midrule
\keys{\Alt + \shift + 1} & \keys{\Alt + \shift + 1} & Fold all \\
\midrule
%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% Indents
\makecell{\keys{\ctrl + [}\\
\keys{\shift + Tab}}
& \makecell{\keys{\cmd + [}\\
\keys{\shift + Tab}}& Indent less
\\*
\midrule
\makecell{\keys{\ctrl + ]}\\
\keys{Tab} (at line start)} &
\makecell{\keys{\cmd + ]}\\\keys{Tab} (at line start)} & Indent more
\\*
\midrule
%%%%%%%%%%%%%%
%%%%%%%% Change case
\keys{\ctrl + U} & \keys{\ctrl + U} & To uppercase\\*
\midrule
\keys{\ctrl + \shift + U} & \keys{\ctrl + \shift + U} & To lowercase \\*
\midrule
%%%%%%%%%%%%%%%%%%
\keys{\ctrl + B} & \keys{\cmd + B} & Bold text (\verb|\textbf|) \\*
\midrule
\keys{\ctrl + I} & \keys{\cmd + I} & Italicise text (\verb|\textit|) \\*
\midrule
\keys{\ctrl + X} & \keys{\cmd + X} & Cut selected text \\*
\midrule
\keys{\ctrl + C} & \keys{\cmd + C} & Copy selected text \\*
\midrule
\keys{\ctrl + V} & \keys{\cmd + V} & Paste copied text \\*
\midrule
\keys{\ctrl + \shift + D} & \keys{\cmd +\shift + D} & Duplicate selected text \\*
\midrule
\keys{\Alt + \shift + \arrowkeyup} & \keys{\Alt + \shift + \arrowkeyup} & Copy lines up
\\*
\midrule
\keys{\Alt + \shift + \arrowkeydown} & \keys{\Alt + \shift + \arrowkeydown} & Copy lines down
\\*
\midrule
\keys{\Alt + \arrowkeyup} & \keys{\Alt + \arrowkeyup} & Move lines up
\\*
\midrule
\keys{\Alt + \arrowkeydown} & \keys{\Alt + \arrowkeydown} & Move lines down
\\*
\midrule
% \keys{\ctrl + \Alt + S} & & Sort selected lines
% \\*
% \midrule
\keys{\ctrl + Z} & \keys{\cmd + Z} & Undo \\*
\midrule
\makecell{\keys{\ctrl + \shift + Z}\\[3pt]\keys{\ctrl + Y}} & \makecell{\keys{\cmd + \shift + Z}\\[3pt]\keys{\cmd + Y}} & Redo \\*
\midrule
% \keys{\ctrl + P} & \keys{\ctrl+ P} & Go to nearest matching start/close parenthesis, brace or bracket \verb|(){}[]|
% \\*
% \midrule
% \keys{\ctrl + \shift + P} & \keys{\ctrl+ \shift + P} & Select to nearest matching \emph{close} parenthesis, brace or bracket \verb|(){}[]|
% \\*
% \midrule
% \keys{\ctrl + \shift + M} & \keys{\ctrl + \shift + M} & Expand selection to current nearest matching start/close parenthesis, brace or bracket \verb|(){}[]|
% \\*
% \midrule
\keys{\Alt + \arrowkeyleft} & \keys{\ctrl+ A} & Go to line start
\\*
\midrule
\keys{\Alt + \arrowkeyright} & \keys{\ctrl + E} & Go to line end
\\*
\midrule
\keys{\ctrl + Home} & \keys{\cmd + \arrowkeyup} & Go to document start
\\*
\midrule
\keys{\ctrl + End} & \keys{\cmd + \arrowkeydown} & Go to document end
\\*
\midrule
\keys{\ctrl + \shift + L} & \keys{\cmd + \shift + L} & Go to line number\ldots
\\*
\midrule
\keys{\ctrl + F}
% \makecell{\keys{\ctrl + F},\quad\keys{\ctrl+H}\\
% (emacs) \keys{\shift + \Alt +5}}
&
\keys{\cmd + F}
% \makecell{\keys{\cmd + F}\\
% \keys{\shift + \Alt +5}}
& Find \\*
\midrule
\keys{\ctrl + G} & \keys{\cmd + G} & Find next \\*
\midrule
\keys{\ctrl + \shift + G} & \keys{\cmd + \shift + G} & Find previous \\*
\midrule
% \keys{\ctrl + \Alt + K} & \keys{\cmd + \Alt + G} & Highlight all currently selected\\*
% \midrule
\keys{\ctrl + A} & \keys{\cmd + A} & Select all
\\*
\midrule
\keys{\ctrl} {\footnotesize+} click & \keys{\cmd} {\footnotesize+} click & Multiple cursors
\\*
\midrule
\keys{\ctrl + \Alt + \arrowkeyup} & \keys{\cmd + \Alt + \arrowkeyup} & Add cursor above (cumulative)
\\* \midrule
\keys{\ctrl + \Alt + \shift + \arrowkeyup} & \keys{\cmd + \Alt + \shift + \arrowkeyup} & Add cursor above (remove previously added)
\\* \midrule
\keys{\ctrl + \Alt +\arrowkeydown} & \keys{\cmd + \Alt + \arrowkeydown} & Add cursor below (cumulative)
\\*\midrule
\keys{\ctrl + \Alt + \shift + \arrowkeydown} & \keys{\cmd + \Alt + \shift + \arrowkeydown} & Add cursor below (remove previously added)
\\*\midrule
\keys{\Alt} {\footnotesize+} drag & \keys{\Alt} {\footnotesize+} drag & Rectangular selection
\\*
\midrule
\keys{\ctrl + J} & \keys{\cmd + J} & Toggle review panel
\\*
\midrule
\keys{\ctrl + \shift + A} & \keys{\cmd + \shift + A} & Toggle track changes
\\*
\midrule
\keys{\ctrl + \shift + C} & \keys{\cmd + \shift + C} & Add comment in review panel
\end{xltabular}
\end{document}