Kaspars

Uses a customized version of the <a href="https://github.com/kasparsd/code-prettify-lib/pull/1" rel="nofollow ugc">Code Prettify library</a> to support local styles and scripts. Plugin applies code highlighting automatically to all <code><pre></code> tags on the page.
Compatible with Gutenberg and doesn’t lock you in with specific markup requirements.
<h4>Development</h4>
Plugin development <a href="https://github.com/kasparsd/code-prettify" rel="nofollow ugc">on GitHub</a>.
<h4>Credits</h4>
Created and maintained by <a href="https://kaspars.net" rel="nofollow ugc">Kaspars Dambis</a>. All of my open source work is available <a href="https://github.com/kasparsd" rel="nofollow ugc">on GitHub</a>.
Use Contact Form 7? <a href="http://preseto.com/go/cf7-storage" rel="nofollow ugc">Storage for Contact Form 7</a> is my commercial plugin (GPL license) for storing all form submissions in your WordPress database.
Cover photo by <a href="https://www.flickr.com/photos/110751683@N02/13334080323/" rel="nofollow ugc">Yuri Samoilov</a>

Code Prettify

I tried to use this plugin in WP 5.0.2 and it works. I got an issue with Litespeed cache configuration and seems we should exclude this plugin javascript from an optimization process. Then you will be fine!

It works as expected!

Perfect. Automatic.

Finally a plugin that works with the outdated "Crayon Syntax Highlighter" plugin

So I don't have to mess around with every post.

Good replacement

Your plugin makes me very secure and happy to use because it doesn't make me dependent, I can disable it without affecting the articles. Good job.

I just hope you can keep the plugin up to date to be compatible with new versions of WordPress.

Thank you!

Please keep update to compatible with WordPress version

100% automatic code highlighting using the Prettify library. No shortcodes, no classnames, fully automatic and pure awesome.

Gilbert Pellegrom

Prism is a new lightweight, extensible syntax highlighter, built with modern web standards in mind, by 
<a href="http://lea.verou.me" rel="nofollow ugc">Lea Verou</a>. This is a WordPress plugin to make it super simple to use Prism on your 
WordPress site.
Features include:
<ul>
<li>Easy setup (install and activate the plugin and Prism is already working)</li>
<li>Settings page with Theme chooser</li>
<li>Enable/disable Prism plugins as required (all from the settings page)</li>
</ul>
For more info on the Prism plugin see the <a href="http://prismjs.com" rel="nofollow ugc">official site</a>.

Prism Syntax Highlighter

Prism is a new lightweight, extensible syntax highlighter, built with modern web standards in mind, by

Code Prettify vs Prism Syntax Highlighter