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.
Version 7 released
Version 7 (released in August 2025) is the latest version of RGraph and
brings with it a big improvement in the quality
of the text that's rendered on canvas charts.
This new improvement in text rendering is
the major focus in this release. Read more
about the new scaling feature at the link below.
New HTML datagrid
In the April 2025 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.
Download
Get the latest version of RGraph (version 7.00, 12th August 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.
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.A nested Donut chart
This is an example of the new (in version 5.28) RGraph.Activity class. (You can read the documentation page for the Activity meter here. Previously to get this sort of chart a large amount of custom code was necessary but now the chart has been given its own class - which is in the RGraph.activity.js file.
The colors and quantity of the rings are specified by you and the icons are configurable (or can be replaced with text if you prefer. The chart can be animated using the grow effect, adjusted and can now also have tooltips.
This goes in the documents header:<script src="RGraph.common.core.js"></script> <script src="RGraph.activity.js"></script>Put this where you want the chart to show up:
<div style="float: right; display: inline-block">
<canvas id="cvs" width="450" height="450" style="background-color: black;">[No canvas support]</canvas>
</div>
This is the code that generates the chart - it should be placed AFTER the canvas tag(s):
<script>
activity = new RGraph.Activity({
id: 'cvs',
min: 0,
max: 100,
value: [67,57,46],
options: {
icons: [
'../images/activityMeter-arrowright.png',
'../images/activityMeter-arrowup.png',
'../images/activityMeter-arrowdown.png'
],
width: 50,
marginTop: 5,
marginBottom: 5,
marginLeft: 5,
marginRight: 5,
responsive: [
{maxWidth: null, width: 350, height: 350, options: {width: null}, parentCss: {'float':'right', textAlign:'none',width:''}},
{maxWidth: 750, width: 250, height: 250, options: {width: 25}, parentCss: {'float':'none', textAlign:'center',width:'100%'}}
]
}
}).grow();
</script>