How to add one picture to the top and another to the bottom of every page of an article? (Including the title page)

Question

I need to add two pictures, one at the top and one at the bottom of every page of my article (to format it for a congress). I've find a way that worked for the top picture there is shown below:

\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[top=160pt]{geometry}
\usepackage{graphicx}
\usepackage{lipsum}
\usepackage{float}
\usepackage{everypage}
\def\PageTopMargin{1cm}
\def\PageLeftMargin{0in}
\newcommand\atxy[3]{%
 \AddEverypageHook{\smash{\hspace*{\dimexpr-\PageLeftMargin-\hoffset+#1\relax}%
  \raisebox{\dimexpr\PageTopMargin+\voffset-#2\relax}{#3}}}}
\atxy{0in}{0in}{\raisebox{-\height}{\includegraphics[width=15cm]{imagens/Cabeçalho.jpg}}}
\title{Test}
\author{MasterChief}
\begin{document}
\maketitle
\lipsum[1-7]
\begin{figure}[H]
  \centering
  \includegraphics[]{example-image-b}
\end{figure}
\lipsum[2-10]
\end{document}

The output is:

I adapted the code from this question of the forum: How to put an image at the top/bottom border of every page?, and it worked fine for the top picture, although I don't know how to add the bottom picture just based on it.

So I wanted to know how to add the bottom picture based on this, or if there's an easier way to do it. (Using other packages or something similar)

**Edit:**I also need to include the page number on the right upper corner of the bottom picture. The configurations that worked for me (maintaining the formating that I need and without overwriting the text below) were:

\usepackage[left=2.0cm,right=2.0cm,bottom=2.0cm,bmargin=3.90cm,tmargin=4.1cm,headheight=3.25cm,
     headsep=1\baselineskip]{geometry}
\fancypagestyle{plain}{%
    \renewcommand{\headrulewidth}{0pt}
    \renewcommand{\footrulewidth}{0pt}
    \fancyhf{}
    \fancyhead[C]{\includegraphics[width=\linewidth, height=3cm]{imagens/Cabeçalho.jpg}}%
    \fancyfoot[C]{\includegraphics[width=\linewidth, height=3.25cm]{imagens/Rodapé.jpg}}
}
\footskip=97pt
\pagestyle{plain}
\fancyfoot[R]{\thepage}

The output that I'm getting is:

and the result that I need is:

So in sum, all the page number are located on the right corner and I just need to deslocate the number of the page to a position similar to that without modfiyng the margins of the pictures.

Answer 1

• Are article has numbered pages?
• If yes, where numbers should be placed?

An example using fancyhdr package, based on answer on question (to which your question is actually duplicate), without numbered pages, can be:

Edit: From OP comment and latter edited question follows, that pages are numbered and that numbers are above bottom images at its north east side.

Since from MWE in question follows, that article is one side, the possible solution is simple:

\documentclass{article}
\usepackage[a4paper,
            hmargin=1in,            % <---
            headheight=0.5in, headsep=1\baselineskip,
            vmargin={1in, 1.3in},   % <---
            showframe   % remove in the real document
            ]{geometry}
\usepackage{graphicx}
\usepackage{fancyhdr}
\fancypagestyle{plain}{%
    \renewcommand{\headrulewidth}{0pt}
    \renewcommand{\footrulewidth}{0pt}
    \fancyhf{}
    \fancyhead[C]{\includegraphics[width=\linewidth, height=0.5in]{example-image-a}}%
    \fancyfoot[C]{\hfill\thepage\par\smallskip
                    \includegraphics[width=\linewidth, height=0.5in]{example-image-b}}
                 }
\usepackage{lipsum}
\title{Test}
\author{MasterChief}
\pagestyle{plain}
\begin{document}
\maketitle
\lipsum\lipsum
\end{document}

However, in conferences proceedings articles are usually two sided. In such cases, the MWE can be as follows:

\documentclass[twoside]{article}    % <---
\usepackage[a4paper,
            hmargin=1in,            % <---
            headheight=0.5in, headsep=1\baselineskip,
            vmargin={1in, 1.3in},   % <---
            showframe   % remove in the real document
            ]{geometry}
\usepackage{graphicx}
\usepackage{fancyhdr}
\usepackage{ifoddpage}  % <--- added
\fancypagestyle{plain}{%
    \renewcommand{\headrulewidth}{0pt}
    \renewcommand{\footrulewidth}{0pt}
    \fancyhf{}
    \fancyhead[C]{\includegraphics[width=\linewidth, height=0.5in]{example-image-a}}%
    \fancyfoot[C]{\checkoddpage
                    \ifoddpage
                    \hfill\thepage
                    \else
                    \thepage\hfill\mbox{}
                    \fi\par\smallskip
                    \includegraphics[width=\linewidth, height=0.5in]{example-image-b}}
                 }
\usepackage{lipsum}
\title{Test}
\author{MasterChief}
\pagestyle{plain}
\begin{document}
\maketitle
\lipsum\lipsum
\end{document}

Edit (2): Even after your editing of question, it still has lack of many (important) information. So below is only skeleton how can be designed bottom image:

\documentclass{article}
\usepackage[hmargin=2cm, vmargin={4.1cm, 3.9cm}, 
            headheight=3.25cm, headsep=1\baselineskip]{geometry}
\usepackage{graphicx}
\usepackage{tikz}               % <--- new
\usetikzlibrary{positioning}    % <--- new
\usepackage{fancyhdr}
\fancypagestyle{plain}%
{
    \renewcommand{\headrulewidth}{0pt}
    \renewcommand{\footrulewidth}{0pt}
    \fancyhf{}
    \fancyhead[C]{\includegraphics[width=\linewidth, height=3cm]{example-image-a}}%
    \fancyfoot[C]{\begin{tikzpicture}
        \node (a) [inner sep = 0pt] {\includegraphics[width=\linewidth, height=3.25cm]{example-image-b}};
        \node     [below left=7mm and 1mm of a,
                   font=\huge\bfseries, text=red,   % <--- change according to your wish,
                   anchor=north east] at (a.north east) {\thepage};
                  \end{tikzpicture}}
}
\usepackage{lipsum}
\title{Test}
\author{MasterChief}
\pagestyle{plain}
\begin{document}
\maketitle
\lipsum
\end{document}

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