formattinggraphics
so I'm pretty new to Latex and I'm trying to include a 716×540 image into my latex file like this:
\begin{figure}
\includegraphics{image.jpg}
\caption{imagecaption}
\end{figure}
But after I convert the .tex to a .pdf via pandoc, the aspect ratio of the image has changed, as in the image is streched weirdly. Here's an image: 
on the right you can see the original image and on the left is my pdf.
Why is this happening?
Edit: live demo: https://www.sharelatex.com/read/tnhkpdcbxyzq
How about a simple example like the following? Create the image file, name it test.png, then compile the document via pdflatex.
\documentclass{article}
\usepackage{graphicx}
\usepackage{draftwatermark}
\SetWatermarkText{\includegraphics{test.png}}
\begin{document}
Some text.
\end{document}
There is also the eso-pic package, but I have not used it myself.
Thankfully, very similar problems have been solved. Here is an adaptation:
\documentclass[preview]{standalone}
\usepackage{fontspec}
\setmainfont{Montserrat-Regular}
\sloppypar
\usepackage{environ}% http://ctan.org/pkg/environ
\newdimen\fontdim
\newdimen\upperfontdim
\newdimen\lowerfontdim
\newif\ifmoreiterations
\fontdim12pt
\newbox\trialbox
\newbox\linebox
\global\newcount\maxbad
\newcount\linebad
\newcount\currenthbadness
\makeatletter
\NewEnviron{fitbox}[2]{% \begin{fitbox}{<width>}{<height>} stuff \end{fitbox}
% Store environment body
\def\stuff{%
\BODY%
}%
% prepare badness box
\def\badnessbox{%
\global\maxbad=0\relax%
\currenthbadness=\hbadness% save old \hbadness
\hbadness=10000000\relax% make sure, TeX reports overfull boxes
\message{Starting measureline recursion with width #1^^J}%
\setbox\trialbox=\vbox{%
\hsize#1\relax%
\fontsize{\fontdim}{1.2\fontdim}%
\selectfont%
\stuff\par%
\measurelines% start recursion
}%
% \noindent\usebox\trialbox\par
\hbadness=\currenthbadness% restore old \hbadness
}
% prepare recursion to measure line badness
\def\measurelines{%
\message{Iteration of measurelines^^J}%
\begingroup%
\setbox\linebox=\lastbox% get the last line
\setbox0=\hbox to \hsize{\unhcopy\linebox}% put the last line into box0 to provoke badness calculation
\linebad=\the\badness\relax% \badness now reflects the last typeset box, i.e. box0
\message{Badness: \the\badness\space\the\linebad\space with max \the\maxbad\space at Fontsize: \the\fontdim\space^^J}%
\ifnum\linebad>\maxbad% store the maximum badness
\global\maxbad=\linebad% Uncomment this line to ignore overfull hboxes!
\fi%
\ifvoid% end of recursion
\linebox%
\else%
\unskip\unpenalty\measurelines% do the recursion
\ifhmode%
\newline%
\fi%
\noindent\box\linebox% do the output
\fi%
\endgroup%
}%
% Prepare measurement box
\def\buildbox{%
\badnessbox% measure badness
\setbox0\vbox{% measure height
\hbox{%
\fontsize{\fontdim}{1.2\fontdim}%
\selectfont%
\minipage{#1}%
\vbox{%
\stuff\par%
}%
\endminipage%
}%
}%
\message{Measured badness: \the\maxbad\space at Fontsize: \the\fontdim\space^^J}%
\dimen@\ht0
\advance\dimen@\dp0
\message{Measured box height: \the\dimen@\space^^J}%
}%
\def\shrinkheight{%
\loop
\fontdim.5\fontdim % Reduce font size by half
\buildbox
\message{Shrinking, new box height: \the\dimen@\space at Fontsize: \the\fontdim\space^^J}%
\ifdim\dimen@>#2 \repeat
\lowerfontdim\fontdim
\upperfontdim2\fontdim
\fontdim1.5\fontdim
}%
\def\shrinkwidth{%
\loop
\fontdim.5\fontdim % Reduce font size by half
\buildbox
\ifnum\maxbad>10000 \repeat
\lowerfontdim\fontdim
\upperfontdim2\fontdim
\fontdim1.5\fontdim
}%
\def\growheight{%
\loop
\fontdim2\fontdim % Double font size
\buildbox
\message{Growing, new box height: \the\dimen@\space at Fontsize: \the\fontdim\space^^J}%
\ifdim\dimen@<#2 \repeat
\upperfontdim\fontdim
\lowerfontdim.5\fontdim
\fontdim.75\fontdim
}%
\buildbox
% Compute upper and lower bounds
\ifdim\dimen@>#2
\message{Need to shrink box height: \the\dimen@\space^^J}%
\shrinkheight
\else
\message{Need to grow box height: \the\dimen@\space to target: #2^^J}%
\growheight
\fi
\message{Max font: \the\upperfontdim\space^^J}%
\message{Min font: \the\lowerfontdim\space^^J}%
% Potentially further reduce bounds for overfull box
\ifnum\maxbad>10000
\shrinkwidth
\fi
\message{Max font adjusted: \the\upperfontdim\space^^J}%
\message{Min font adjusted: \the\lowerfontdim\space^^J}%
% Now try to find the optimum height and width
\loop
\buildbox
\message{Height: \the\dimen@\space^^J}%
\ifdim\dimen@>#2
\moreiterationstrue
\upperfontdim\fontdim
\advance\fontdim\lowerfontdim
\fontdim.5\fontdim
\else
\ifnum\maxbad>10000
\moreiterationstrue
\upperfontdim\fontdim
\advance\fontdim\lowerfontdim
\fontdim.5\fontdim
\else
\advance\dimen@-#2
\ifdim\dimen@<10pt
\lowerfontdim\fontdim
\advance\fontdim\upperfontdim
\fontdim.5\fontdim
\dimen@\upperfontdim
\advance\dimen@-\lowerfontdim
\ifdim\dimen@<.2pt
\moreiterationsfalse
\else
\moreiterationstrue
\fi
\else
\moreiterationsfalse
\fi
\fi
\fi
\ifmoreiterations \repeat
\message{Selected font: \the\fontdim\space^^J}%
\vbox to #2{\box0\hbox{}}% Typeset content
}%
\makeatother
\usepackage{parskip}
\setlength\fboxsep{0pt}
\begin{document}
\begin{fitbox}{600px}{200px}%
\center{I am curious about area-filling text rendering options}
\end{fitbox}
\end{document}
This was processed with lualatex.
Best Answer
As you can see in your project, if you replace the image you are using there with the other image it works fine... The problem is the image and has nothing to do with latex and friends.
I tried to open it with inkscape and it was like latex output.
Then tried with other programs and seemed to be ok... but wasn't.
Solution: I used shotwell and saved with the below settings :
The saved image was ok but I suggest to learn some tikz and create such images inside latex.