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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 17 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 7.01 released
Version 7.01 (released in October 2025) is the latest version of RGraph and now includes a new tree structure object. The accompanying Treemenu object can then turn the object into a fully dynamic tree menu. You can read the API documentation for the tree on the main API documentation page and see an example of the Treemenu feature by following this link...

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New HTML datagrid
In the April 2025 (v6.21) release a new datagrid object was added. This makes it easy to add static or dynamic data tables to your pages. It can be used whether you use the canvas or SVG libraries or entirely standalone.

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Download
Get the latest version of RGraph (version 7.01, 8th October 2025) 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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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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Vertical Progress bar API reference

The Bar chart can be customised to appear as a Vertical Progress bar. This means that all of the properties that pertain to the Bar chart, such as tooltips, can be used as well. There's an example in the download archive that you can see here.

Example

See all of the 1200+ demos in the download archive. 

<script>
    // This Bar chart becomes the background of the progress bar
    new RGraph.SVG.Bar({
        id: 'chart-container',
        data: [100],
        options: {
            colors: ['Gradient(#eee:white)'],
            marginLeft: 45,
            marginRight: 5,
            backgroundGrid: false,
            colorsStroke: '#ccc',
            marginInner: 10,
            yaxis: false,
            yaxisScale: false,
            xaxis: false,
            linewidth: .5,
            shadow: true,
            shadowOpacity: .1
        }
    }).draw();

    // This Bar chart becomes the inner bar of the progress bar
    new RGraph.SVG.Bar({
        id: 'chart-container',
        data: [73],
        options: {
            yaxisScaleMax: 100,
            yaxisScaleUnitsPost: '%',
            yaxisTextColor: '#666',
            yaxis: false,
            xaxis: false,
            shadow: true,
            shadowOffsetx: 1,
            shadowOffsety: 1,
            shadowBlur: 1,
            titleColor: '#666',
            colors: ['Gradient(red:#fcc)'],
            backgroundGrid: false,
            tooltips: ['Monday was an average day'],
            tooltipsCss: {
                backgroundColor: '#333',
                fontWeight: 'bold',
                fontSize: '14pt',
                opacity: 0.85
            },
            marginLeft: 45,
            marginRight: 5,
            marginInner: 15
        }
    }).grow();
</script>