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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 7.11
Version 7.11 (released in March 2026) is the latest version of RGraph and contains just a few updates to the code which you can see on the changelog page. There's a new dumbbell variation for the Bar and Horizontal bar charts (both SVG and canvas) and the front page layout of the website has been tweaked.

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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 7.11, 21st March 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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Some examples of notification messages for your website

Written by Richard Heyes, RGraph author, on 30th October 2023

Introduction

Here's some success, warning and error message styles that you could use on your website or in your web application. Use them to give your users information or messages (for example on successful or failed submission of a form) and to clearly indicate the severity of the information.

The CSS for the message styles

Here's the css that's necessary for the message styles. 

<style>
    /*
    * Styles that apply to all three styles of message
    */
    div.rgraph-error-message-container,
    div.rgraph-warning-message-container,
    div.rgraph-success-message-container,
    div.rgraph-notice-message-container {
        font-family: Arial;
        position: relative;
        border-radius: 10px;
        width: calc(100% - 10px);
        margin-top: 15px;
        margin-bottom: 15px;
        line-height: 20px;
    }
    
    div.rgraph-error-message-container   > div,
    div.rgraph-warning-message-container > div,
    div.rgraph-success-message-container > div,
    div.rgraph-notice-message-container > div {
        background-color: white;
        border-radius: 10px;
        position: relative;
        left: 7px;
    }

    div.rgraph-error-message-container   > div > div,
    div.rgraph-warning-message-container > div > div,
    div.rgraph-success-message-container > div > div,
    div.rgraph-notice-message-container > div > div {
        border-radius: 10px;
        padding: 15px;
        position: relative;
    }

    div.rgraph-error-message-container   > div > div > span,
    div.rgraph-warning-message-container > div > div > span,
    div.rgraph-success-message-container > div > div > span,
    div.rgraph-notice-message-container > div > div > span {
        font-weight: bold;
    }




    /*
    * Set the colors for each message style
    */
    div.rgraph-success-message-container                    {background-color: #0a0;}
    div.rgraph-success-message-container > div              {border: 1px solid #0a0;}
    div.rgraph-success-message-container > div > div        {background-color: #0f04;}
    div.rgraph-success-message-container > div > div > span {color: green;}

    div.rgraph-warning-message-container                    {background-color: #e7c000;}
    div.rgraph-warning-message-container > div              {border: 1px solid #cc0;}
    div.rgraph-warning-message-container > div > div        {background-color: #fff7d0;}
    div.rgraph-warning-message-container > div > div > span {color: #aa0;}
    
    div.rgraph-error-message-container                     {background-color: red;}
    div.rgraph-error-message-container > div               {border: 1px solid #c00;}
    div.rgraph-error-message-container > div > div         {background-color: #f004;}
    div.rgraph-error-message-container > div > div > span  {color: red;}
    
    div.rgraph-notice-message-container                     {background-color: blue;}
    div.rgraph-notice-message-container > div               {border: 1px solid #00c;}
    div.rgraph-notice-message-container > div > div         {background-color: #00f4;}
    div.rgraph-notice-message-container > div > div > span  {color: blue;}
</style>

Success message

Success
This is a success message. 
<div class="rgraph-success-message-container">
    <div>
        <div>
            <span>Success</span><br />
            This is a success message.
        </div>
    </div>
</div>

Warning message

Warning
This is a warning message that you may see when you've done something that is not an error - but still quite serious. 
<div class="rgraph-warning-message-container">
    <div>
        <div>
            <span>Error</span><br />
            This is a warning message that you may see when you've
            done something that is not an error - but still quite
            serious.
        </div>
    </div>
</div>

Error message

Error
This is an error message that you may see when you've done something that is not allowed! 
<div class="rgraph-error-message-container">
    <div>
        <div>
            <span>Error</span><br />
            This is an error message that you may see when you've
            done something that is not allowed!
        </div>
    </div>
</div>

Notice message

Notice
This is a notice message that you may see when a bit of text is informational. 
<div class="rgraph-notice-message-container">
    <div>
        <div>
            <span>Notice</span><br />
            This is a notice message that you may see when a bit of text is informational.
        </div>
    </div>
</div>