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Finally a plugin that works with the outdated "Crayon Syntax Highlighter" plugin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

treeflips

Yin Zhongzhen

Simple plugin that automatically copies content in <code><pre></code> and <code><code></code> tags to clipboard (when clicked). Other plugins out there do the same but create a little [COPY] button that you have to aim for. Mine doesn’t require any aiming, just click anywhere on the code block and it copies the whole thing. Customizable hover tooltip lets you know it’s copied.
For sites sharing code-commands, this plugin will save users time from having to highlight and copy-paste bits of text back and forth. It’s especially helpful for large globs of code that scroll off-screen, or when copying on your mobile phone. I’ve added more features to make it more helpful.
Features: 
* Easy aim – click anywhere on text block to copy entire text, no need to aim for tiny text or clipboard icon. 
* Tooltip text customization – change tooltip text. 
* Tooltip color options – customize tooltip background and text colors. 
* Tooltip hover custom CSS – completely restyle the tooltip hover. 
* Tooltip function custom CSS – apply tooltip function to other CSS classes. Allowing copy function on any content block, not only code blocks.

Code Prettify vs Code Click to Copy