<div class="container">
  <h3>Gnuplot</h3>
  <div data-src="contour.svg"></div>

  <h3>Graphviz</h3>
  <div data-src="flow-chart.svg"></div>

  <h3>Mermaid</h3>
  <div data-src="class-diagram.svg"></div>

  <h3>Vega</h3>
  <div data-src="vega.svg"></div>

  <h3>VegaLite</h3>
  <div data-src="vega-lite.svg"></div>

  <h3>Plotly</h3>
  <!-- any graph can be rendered as image -->
  <img data-src="box.svg" />

  <h3>Nomnoml</h3>
  <img data-src="nomnoml.svg" />

  <h3>WaveDrom</h3>
  <div data-src="diagram.svg"