[Tex/LaTex] How to use TikZ to make standalone (SVG) graphics

conversionsvgtikz-pgf

I would like to use TikZ in other settings than TeX and I'd especially like to use the drawings on websites where the text should be searchable and selectable. However, I'm unsure of the best way to convert my drawings to SVG.

How do I best take some TikZ code, render the drawing and turn the output into SVG?

Best Answer

You can use the standalone class to produce tight PDF files for one or multiple TikZ pictures. I originally wrote it to simplify the creation of the many pictures of my thesis. Since v1.0 it includes a convert option which can convert the produced PDF into a graphics file automatically (using external software, which requires the -shell-escape compiler option).

This is very similar to Compile a LaTeX document into a PNG image that's as short as possible, but SVG needs some extra care.

You can write your TikZ pictures the following way:

\documentclass[tikz,convert={outfile=\jobname.svg}]{standalone}
%\usetikzlibrary{...}% tikz package already loaded by 'tikz' option
\begin{document}
\begin{tikzpicture}% Example:
  \draw (0,0) -- (10,10); % ...
  \draw (10,0) -- (0,10); % ...
  \node at (5,5) {Lorem ipsum at domine standalonus};
\end{tikzpicture}
\end{document}

Then either you compile the file as usual with pdflatex or another latex and convert the PDF to a SVG manually or compile it with the -shell-escape option and let standalone convert it for you.

Manual conversion can be done with a number of tools. It is simpler under Linux, because these tools are easily available there, but should be possible under Windows as well. (The convert options isn't really tested under Windows, btw.) By default standalone uses Image Magick's convert, which can do PDF to SVG but will not always give you good results. The pdf2svg tool seems to be better suited, but isn't supported out-of-the-box by standalone yet. It can of course be used manually as shown in Exporting all equations from a document as individual svg files.

You can configure standalone to use pdf2svg directly by using the command key of the convert option. Unfortunately, there is a small bug in standalone preventing it. I just fixed that and will upload the new version today.

With this you can write: 

\documentclass[crop,tikz,convert={outext=.svg,command=\unexpanded{pdf2svg \infile\space\outfile}},multi=false]{standalone}[2012/04/13]
%\usetikzlibrary{...}% tikz package already loaded by 'tikz' option
\makeatletter
\begin{document}
\begin{tikzpicture}
  \draw (0,0) -- (10,10); % ...
  \draw (10,0) -- (0,10); % ...
  \draw (5,0) -- (0,10); % ...
  \node at (5,5) {Lorem ipsum at domine standalonus};
\end{tikzpicture}
\end{document}

The \unexpanded is required because LaTeX expands class options. You can also add \noexpand before every macro instead.

If you need this more often you can also use a standalone.cfg file which enables this for all (local) standalone files. Simply create this file as follows in the same directory:

% Local standalone.cfg file
\input{standalone/standalone.cfg}% Load main standalone.cfg file
\standaloneconfig{convert={command={pdf2svg \infile\space\outfile}}}

I might add a special pdf2svg key in the next version as well, so you only need to write the following then:

\documentclass[crop,tikz,convert=pdf2svg]{standalone}[2012/04/13]
% ...
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