change the itemize from bullet to square

Question

I am trying to change the itemize symbols. Using

\begin{itemize}
 \renewcommand{\labelitemi}{$\blacksquare$} 
 \item  An extensively analysis 
\end{itemize}

the problem is the dimension of the square. it is quite big with respect the bullet one. Any idea about that?

Answer 1

Try this. It changes the font size just before typesetting the \blacksquare. Depending on what you need, other sizes, such as \tiny are also available.

\documentclass{article}
\usepackage{amssymb}
\begin{document}

\begin{itemize}
 \renewcommand{\labelitemi}{\scriptsize$\blacksquare$}
 \item  An extensively analysis
\end{itemize}

\end{document}

Answer 2

I use something like

\documentclass{article}

\usepackage{xcolor}
\begin{document}

\newcommand{\localtextbulletone}{\textcolor{gray}{\raisebox{.45ex}{\rule{.6ex}{.6ex}}}}
\renewcommand{\labelitemi}{\localtextbulletone}
\begin{itemize}
\item  An extensively analysis
\end{itemize}

\end{document}

so I'm able to change the size. The colour is, of course, optional.