Can someone please explain to me why the picture I inserted is not visible?
\documentclass[12 pt,letterpaper,draft]{article}%inicia preambulos
\usepackage[latin1]{inputenc}
\usepackage[spanish]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{fourier}
\usepackage[left=3cm,right=2.5cm,top=3cm,bottom=2cm]{geometry}
\begin{document}% Aqui empieza el documento
\begin{figure}
\includegraphics[scale=1]{polli}
\end{figure}
\end{document}

draftenabled somewhere? Can you post the code that is responsible in a complete, but minimal.texfile? – jon Oct 04 '16 at 04:01draftoption – Mico Oct 04 '16 at 04:18\documentclassinstruction. – Mico Oct 04 '16 at 04:31