Peter Booker

(note: Gutenberg Editor Required)
A syntax / code highlighter Gutenberg block. Paste your code into the block, set the language and see your code highlighted exactly like it will display on the frontend.
<h4>Features</h4>
<ul>
<li>Syntax highlighting block for the Gutenberg Editor</li>
<li>Switch between editor and preview, see exactly what will appear on the frontend.</li>
<li>Supports 121 languages, listed <a href="https://codemirror.net/mode/" rel="nofollow ugc">here</a>.</li>
<li>2 Themes, VSCode Dark+ and Github, see the screenshots below. (more coming soon)</li>
<li>Static HTML output, no frontend scripts or user tracking.</li>
</ul>

Kebo Code

Lightweight syntax / code highlighter which outputs plain HTML, no bloat or JavaScript.

Shaikh Masood Alam

This plugin uses the Prism.JS to Highlight & Style Code
The plugin also adds styling to the existing prism Quick tag in your WordPress text editor.
Languages Supported:
<ul>
<li>Markup</li>
<li>CSS</li>
<li>C-like</li>
<li>JavaScript</li>
<li>PHP</li>
</ul>

Prism Highlight

Styles Your Code With Prism.JS, a Lightest Code Highlighter.

Kebo Code vs Prism Highlight