stanton119

WordPress HTML allows you to add custom HTML to both the post/page BODY and the HEAD tags from the page editor.
When copying HTML into the WordPress editor it adds spurious tags which break various elements and corrupt the HTML. By saving the HTML in the custom fields dialogue the exact HTML will be output to your post/page.
Also if you have a single page which requires an extra javascript library or style sheet you normally have to add it through your themes php files. Updating the theme files can be a pain; we normally have to set up an exception for that individual page and load it there. As this information is not available when we are editing the actual pages in the WordPress editor it is quite obstructive.
With WordPress HTML, we can add the library or stylesheet directly to the post/page head without the need to change the theme files. And importantly, all from within the WordPress editor for that page.
Example libraries: 
jQuery, ChartJS, D3js, Highcharts, Prototype
More details: <a href="http://www.richard-stanton.com/wordpress/wordpress-html/" rel="nofollow ugc">WordPress HTML</a>
Code: <a href="https://github.com/stanton119/WordPress-HTML-Plugin" rel="nofollow ugc">GitHub</a>

WordPress HTML

Add raw HTML to any post/page, without the Wordpress editor breaking it.

methnen

Manage data sets via a spreadsheet interface, display them as charts via the Chart.js chart library, and embed them via a shortcode or block.
**Note:*** Starting with M Chart version 2.0 the plugin uses a new React based UI as well as updated data parsing class. This means any third party libraries will need to be refactored to support this. Version 1.3 of the <a href="https://github.com/methnen/m-chart-highcharts-library/" rel="nofollow ugc">M Chart Highcharts Library</a> has the necssary changes implemented.
Note: Starting with version 1.8 the Chart.js library is no longer on the 2.x.x branch which introduces some <a href="https://www.chartjs.org/docs/latest/migration/v3-migration.html" rel="nofollow ugc">breaking changes</a>. This will probably only affect you if you were modifying the default Chart.js behavior in some way.
Accessibility: M Chart targets WCAG 2.1 Level AA. Charts on the front end include a visually-hidden data table for screen-reader users, and a <code>Color Blind Safe</code> theme is bundled. Screen-reader users entering chart data should use the CSV Import feature — the spreadsheet widget has partial keyboard support but CSV import is fully accessible.
For full documentation please see the <a href="https://docs.mch.art/" rel="nofollow ugc">Documentation</a>.
To contribute, report issues, or make feature requests use <a href="https://github.com/methnen/m-chart" rel="nofollow ugc">Github</a>.

M Chart

This plugin fits my needs for creating beautiful and responsive charts on my WordPress. Thanks for your work!

Great support and nicely done!

Manage data sets via a spreadsheet interface, display them as charts via the Chart.js chart library, and embed them via a shortcode or block.

WordPress HTML vs M Chart