pdflatex page numbering code example

Example: add page number in overleaf

\documentclass{article}

\usepackage{lastpage}

\usepackage{fancyhdr}

\fancyfoot[C]{Page \thepage\ of \pageref{LastPage}}

% Uncomment to remove the header rule
% \renewcommand{\headrulewidth}{0pt} 

\pagestyle{fancy}

\begin{document}

some dummy text

\end{document}