Image you have a figure, but it just needs a bit of tweaking. Fear not! the following will do all the magic for you:
\usepackage{graphicx}...\begin{figure}[htbp] \begin{center} \includegraphics[trim=left bottom right top, clip]{file} \caption{default} \label{default} \end{center}\end{figure}, where the default units of trim are big points (bp). For example:
trim=1200 400 1500 1500, clip]
I recommend you start small (say 100) and then go up from there, depending on the need.
Taken from here.
