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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 7.10 released
Version 7.10 (released in January 2026) is the latest version of RGraph and contains various updates to the code which you can see on the changelog page. There's also a big tidy up in terms of comments and a significant change to the way that the internal code is referenced which should lead to a performance improvement in effects and animations.

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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 7.10, 18th January 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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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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How can I use RGraph with an IoT ESP32 ESP8266?


Posted by JohnBras at 22:02 on Wednesday 6th December 2023 [link]
Did anyone use this with Arduino to make a gauge meter for temperature sensing, as an example, and a ESP8266 so that we can work offline ? Is there a tutorial how to get me started ?

Posted by Richard at 23:38 on Wednesday 6th December 2023 [link]
I've never done that or used such a 'thing' - but maybe this might help:

var value = 80; // <-- Change this 80 to be the value that you want to see on the Gauge
new RGraph.Gauge({
    id: 'cvs',
    min: 0,
    max: 100,
    value: value,
    options: {
    }
}).draw();

HTH

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