Problem:
Trying to fit an image to the upper half of a page but without success.
Minimal Working Example:
\documentclass[export]{article}
\usepackage{graphicx}
\graphicspath{{./figures/},{./chapters/}}
\begin{document}
\thispagestyle{empty}
\begin{figure}[!t]
\centering
\includegraphics[width=\paperwidth]{chapter1.jpg}
\label{fig:fig1}
\end{figure}
\end{document}
Outputs:
Desired output:
To make the image cover exactly the upper half of the page, starting from the top-left corner.

