RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 15 years old) and has a wealth of features making it an ideal choice to show charts on your website.

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Get the latest version of RGraph (version 6.17) from the download page. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

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RGraph can be used for free under the GPL or if that doesn't suit your situation there's an inexpensive (£129) commercial license available.

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A black and gray SVG Line chart

A straightforward Line chart that's showing UFO sightings over the past century. As you can see - people's creativity is clearly on the increase - particularly since the 1990s!

The background grid is customised with white and an increased number of vertical lines.

The x-axis labels are just years, the axes have been turned off and the tickmarks for the line are filled circles.

On the whole, it's a pretty regular Line chart. The responsive configuration just shrinks the size of the chart and reduces the size of the linewidth and the tickmarksSize options.

This goes in the documents header:
<script src="../libraries/RGraph.svg.common.core.js" ></script>
<script src="../libraries/RGraph.svg.line.js" ></script>
Put this where you want the chart to show up:
<div style="float: right">
    <div style="width: 600px; height: 250px" id="chart-container"></div>
This is the code that generates the chart - it should be placed AFTER the div tag:
    // A Line chart that shows the increase over the years
    // of UFO sightings. The background color and the grid
    // have been color inverted with the grid being
    // white and the background color being gray. The axes
    // have been disabled and the text is slightly smaller
    // than the default.
    new RGraph.SVG.Line({
        id: 'chart-container',
        data: [0,2,3,2,3,6,5,6,10,42,46],
        options: {
            backgroundColor: '#eee',
            backgroundGridColor: 'white',
            backgroundGridVlinesCount: 20,
            backgroundGridLinewidth: 2,
            colors: ['black'],
            tickmarksStyle: 'filledcircle',
            xaxis: false,
            yaxis: false,
            yaxisScaleUnitsPost: 'k',
            textSize: 10,
            xaxisLabels: ['1910','1920','1930','1940','1950','1960','1970','1980','1990','2000','2010'],
            // Add some responsive capability
            responsive: [
                {maxWidth: null,width:600,height:250,parentCss: {'float':'right',textAlign:'none'},options:{xaxisLabelsAngle: 0,linewidth:2,tickmarksSize:6}},
                {maxWidth: 850, width:400,height:200,parentCss: {'float':'none',textAlign:'center'}, options:{xaxisLabelsAngle: 45,linewidth:2,tickmarksSize:5}}
    // Use the trace() animation to show the chart