I need to insert a logo on pdflatex supported format on the bottom right of each page.

Do you think it's possible?

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yes. use \savebox and a footer –  Yossi Farjoun Dec 23 '10 at 11:57

You can also use eso-pic:

\documentclass{article}
\usepackage{eso-pic,lipsum}
\AtPageLowerLeft{\hspace{1cm}A small logo: \rule{2cm}{3cm}}}
\begin{document}
\lipsum
\end{document}


giving:

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Good suggestion! I always forget about eso-pic. –  TH. Dec 23 '10 at 12:21
Thanks ! I try it –  pbneau Dec 29 '10 at 18:08

You can easily set headers and footers using the fancyhdr package. Here's an example.

\documentclass{article}
\usepackage{fancyhdr}
\usepackage{lipsum}
\pagestyle{fancy}
\lfoot{}
\cfoot{\thepage}
\rfoot{My Logo here!}
\renewcommand\footrulewidth{0pt}
\begin{document}
\lipsum
\end{document}


giving:

Note that the lipsum package is just to get sample text, it's not part of the solution.

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Using the background package:

\documentclass{article}
\usepackage{background}
\usepackage{lipsum} % used to create the lipsum text

\backgroundsetup{
scale=1,
angle=0,
opacity=1,
color=black,
contents={\begin{tikzpicture}[remember picture,overlay]
\node at ([xshift=-1.2in,yshift=1.2in] current page.south east) % Adjust the position of the logo.
{\rule{2cm}{3cm}}; % logo goes here
\end{tikzpicture}}
}
\begin{document}

\lipsum[1-7]

\end{document}


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