What's the best way to write over an image?

Question

I'm trying to write text over an image like this exemple:

I've read a lot about this topic but as I'm quite a beginner with Latex I'm lost (I'm using Overleaf with pdflatex btw).

I did the exemple with this code:

preambule.tex
\usepackage{pst-all}
\usepackage[miktex]{pdftricks} 
\usepackage{auto-pst-pdf}
main.tex
\input{preambule}
\begin{document}
\begin{pspicture}(2.6,0)(21,3)
  \uputur{\includegraphics[width=20.6cm,height=3cm]{images/Bandeau.jpg}}
  \uputu{\textbf{\LARGE{Rapport 1 mois de stage}}}
  \uputu{\textbf{\large{JLR}}}
  \uputu{\textbf{4A GBM}}
  \uputu{\textbf{Octobre 2020}}
\end{pspicture}
\section{Environnement}

But I still have some warnings that I don't really understand:

Package pdftricks Warning: **************************************** No \write 18 capability. You'll have to run a script by yourself! ****************************************.

Package pdftricks Warning: **************************************** Package pdftricks v,1.16 loaded [psTricks support in PDF (CVR, ACL)] ****************************************.

So, I would like to know if it is a good solution and how I can remove those warnings. Or do I have to use tikz (such as this answer) even if I find it more difficult than pstricks ? What's the real difference(s) between this two solutions?

I've also read about pdftex--shell-escape or \write18 but I don't know where to introduce it in my document because I do not use commands.

Well, if someone can clarify those points... Thanks!

Answer 1

There is no need for pstricks or complicated stuff. You can simple go back and write over a picture:

\documentclass{article}
\usepackage{graphicx}
\begin{document}
\includegraphics{example-image-duck}\raisebox{3cm}{\hspace{-4cm}\Huge Some Text}
\end{document}

Answer 2

Run with xelatex:

\documentclass[border=10pt,pstricks]{standalone}
\usepackage{graphicx,mwe}
\usepackage{pstricks}
\newsavebox\IBox
\sbox\IBox{\includegraphics{example-grid-100x100pt.png}}
\begin{document}
\begin{pspicture}(\wd\IBox,\ht\IBox)
\rputlb{\usebox\IBox}%
\pslinelinecolor=white,linewidth=5pt%
\pslinelinecolor=white,linewidth=5pt(\wd\IBox,0)
\pslinelinecolor=white,linewidth=2pt(\wd\IBox,0.5\ht\IBox)
\pslinelinecolor=white,linewidth=2pt(0.5\wd\IBox,0)
\end{pspicture}
\end{document}