Anthony

Easily highlight your code on WordPress with WP PrismJS.
Simply download & activate the plugin and a new icon on your TinyMCE editor will appear. Click on it and you will be able to enter your indented code; choose the language; specifying the maximum height of the code window and the filename.
More info about PrismJS at <a href="http://prismjs.com" rel="nofollow ugc">the official PrismJS website</a> — <a href="http://lea.verou.me" rel="nofollow ugc">by Lea Verrou</a>
Any bugs; comments or suggestion, please contact me or simply go <a href="https://wordpress.org/support/plugin/wp-prismjs-syntax-highlighter" rel="ugc">here</a>. Thanks !

WP PrismJS – Syntax Highlighter

Highlight your code on WordPress with WP PrismJS !

Dan D

Codeblocks Extended with PrismJS was born of a personal need for a lightweight code highlighter, with special functionality. 
Many of the other PrismJS based plugins in the repository were either outdated, or were lacking features that I was looking for.
Features:
<ul>
<li>Integrates the latest PrismJS build, with the most common langauges used.</li>
<li>Integrates the PrismJS line-numbers plugin, to automatically number lines of code.</li>
<li>Integrates the PrismJS line-highlight plugin to allow you to highlight specific lines of code.</li>
<li>Integrates ClipboardJS + custom jQuery to add a “Copy to Clipboard” button to each code block.</li>
<li>Custom Text Editor button to wrap selected text with the most commmon <code><pre></code> and <code><code></code> classes, and replacing special characters with their HTML safe equivalents.</li>
<li>Custom Visual Editor / TinyMCE dropdown button, with the most common languages to wrap selected text.</li>
<li>Since this works via wrapping <code><pre></code> and <code><code></code> tags with classes, you can use all custom class settings that PrismJS offers.</li>
<li>No shortcodes to mess with, so you don’t have to worry about losing whitespace between editor modes.</li>
<li>No settings page needed: Just activate it and go!</li>
</ul>
For a full list of languages supported and more information on this plugin’s use, please check out the FAQ.
Note: This does NOT auto-detect the language. Most plugins that do so brute force the languages or require file extensions, resulting in a much heavier plugin. The decision was made to keep this as light-weight as possible.
Note 2: This is designed to work with the Classic Editor. It does not currently work in Gutenberg blocks.
Thanks to Mike @ <a href="https://wp-bullet.com/" rel="nofollow ugc">WP Bullet</a> for the banner and icon.

Codeblocks Extended with PrismJS

Codebocks Extended with PrismJS includes syntax highlighting, copy to clipboard, and Visual + Text editor integration.

WP PrismJS – Syntax Highlighter vs Codeblocks Extended with PrismJS