# Draw red X over an external image using PGF/Tikz

I want to draw a thick red X over an image from a PNG file, as a part of a Tikz picture. How can this be done? The documentation regarding external images in PGF is a bit vague.

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 – Click Me Jan 14 '12 at 1:56

Place the image in a node and use the node anchors to draw the cross

\documentclass{article}
\usepackage[demo]{graphicx}
\usepackage{tikz}

\begin{document}

\begin{tikzpicture}
\node (img) {\includegraphics{foo.png}};
\draw[red, line width=1mm]
(img.south west) -- (img.north east)
(img.south east) -- (img.north west);
\end{tikzpicture}

\end{document}

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 Thanks! I tried to do the same using \pgfuseimage, but apparently it does not get the bounding box right. – Little Bobby Tables Apr 17 '11 at 10:44 You can modify the extend to which the lines are going beyond the image using either the inner sep or outer sep option for the image \node. For example: inner sep=0pt,outer sep=0pt will make the cross exactly the size of the image. – Martin Scharrer♦ Apr 17 '11 at 11:00