# Modify white background of CTAN lion EPS

I want to use vector image ctanlion.eps in my beamer presentations.

\documentclass{beamer}

\setbeamertemplate{background canvas}[default]
\setbeamercolor{background canvas}{bg=gray}

\begin{document}

\begin{frame}
\includegraphics[width=\textwidth,height=\textheight]{ctanlion}
\end{frame}

\end{document}


But the EPS file is not total transparent: you could still see some white areas. What is the good way to modify the EPS file, removing these white areas?

• whoever painted it didn't fill all. Put it over a gray (tikz) box? – percusse Jun 30 '17 at 2:00

I would open it up in inkscape, put a coloured rectangular box behind it so I can see what is going on, ungroup the lion, then delete the white objects. Once you're happy that all the white is removed, delete your coloured rectangle, and save it back out as either a PDF or EPS. (I've just done this if you can think of a way for me to get it to you.)

• Thank You. Could you send a copy to me? You may see my email address in my profile page. – Z.H. Jun 30 '17 at 2:18
• Just emailed it though. – David Purton Jun 30 '17 at 2:24
• Got it. And maybe you could also send it to CTAN mantainers, to benefit more people. – Z.H. Jun 30 '17 at 2:33
• Good idea. I'll clean them up and put offer them in a range of formats to CTAN. – David Purton Jun 30 '17 at 3:17