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.net Powerful JavaScript charts
About
RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 18 years old) and has a wealth of features making it an ideal choice to use for showing charts on your website.

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Version 7.20
Version 7.20 (released in June 2026) is the latest version of RGraph and the major change in this version is an update to the default values of properties making for better looking charts without having to set any properties. Read more about this and other changes in the changelog.

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Download
Get the latest version of RGraph (version 7.20, 9th June 2026) from the download page. You can read the changelog here. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

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Latest forum posts
These are the latest support forum posts that have been posted or updated.


12th June, Marco
Should I use SVG or canvas for the charts on my website?
9th June, Richard
New version of RGraph: version 7.20
3rd June, Patrick
Question about installing RGraph
1st June, Ouja
How do I add a click event to a bar in my Bar chart?
8th May, Anthony Kuma
Does the SVG Line chart have outofbounds functionality?


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License
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 Line chart showing employee sales

[No canvas support]

A Line chart showing the employee sales by department. Since this chart is a copy of a chart found on the Internet it uses the Line chart - though a stacked or grouped Bar chart may represent the data better because the types of furniture aren't related to each other.


This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.line.js"></script>
Put this where you want the chart to show up:
<div style="text-align: center">
    <canvas id="cvs" width="575" height="450">[No canvas support]</canvas>
</div>
This is the code that generates the chart - it should be placed AFTER the canvas tag(s):
<script>
    // Create the Line chart
    new RGraph.Line({
        id: 'cvs',
        
        // The four datasets that are shown on the chart - a multi-dimensional
        // array.
        data: [
            [190,165,47,121,30,72],
            [12,180,10,80,25,75],
            [42,80,93,25,21,120],
            [2,42,27,47,43,50]
        ],

        options: {
            backgroundGridColor: 'gray',
            colorsBackground: '#222',
            textColor: '#A7A5A6',
            textSize: 14,
            title: '2009 employee sales by department',
            titleColor: 'white',
            xaxisLabels: ['Food','Auto','Misc','Furniture','Bath','Kitchen'],
            marginLeft: 50,
            marginRight: 50,
            marginBottom: 60,
            colors: ['#B8202C','#96D1E3','#FA8710','#62648D'],
            
            // The key for this chart is positioned in the bottom margin
            // instead of the top
            key: ['Mary','Tom','Brad','Kate'],
            keyPosition: 'margin',
            keyLabelsSize: 14,
            keyLabelsColor: 'rgb(248,248,248)',
            keyPositionY: 425,
            responsive: [
                {maxWidth:null,width:575,height:450,options:{linewidth: 7,marginTop: 75,titleSize: 17,keyPositionY: 425},css:{'float':'none'}},
                {maxWidth:900,width:400,height:300,options:{linewidth: 4,marginTop: 55,titleSize: 17,keyPositionY: 275},css:{'float':'none'}}
            ],

            // Here we use the beforedraw event to clear the canvas to a dark
            // color before the drawing is performed. Since it's the beforedraw
            // event the call to the draw() function has to be after the on()
            // function (otherwise the beforedraw event would have already run
            // by the time that the event is added.
            events: {
                beforedraw: function (obj)
                {
                    // Clear the canvas to a specific color
                    RGraph.clear(obj.canvas, '#555557');
                }
            }
        }

    // Use the trace effect to show the chart and add some responsive capability to accommodate
    // smaller screens.
    }).trace();
</script>