Agus Prawoto Hadi

Syntax Highlighter developed by Alex Gorbatchev that has been developed 10+ years is a popular syntax highlighter. It is also widely used by a lot of blog and website.
Currently, it achieves version of 4, this version has significant change in the built method compared to the previous, this is, for some people, somewhat confused and hard to do.
This plugin helps you to bring this code highlighter to your WordPress easily, forget a headache builds. Provided with many features and user-friendly GUI, make it handy and easy to use
** Features. **
<ul>
<li>Simple and easy to use</li>
<li>Full GUI, don’t need to hardcode the parameters</li>
<li>Custom container max-height. Useful when displaying long code.</li>
<li>Easy to add custom CSS. Useful for responsive design.</li>
<li>Easy to edit code that has been written in tinyMCE text editor (Screenshot 3)</li>
<li>Write and edit code in place. The textarea code editor supports the tab and back tab, so you can directly edit or write your code, rather than switch back to your code editor.</li>
<li>Load script on demand, load javascript and CSS files of syntax highlighter only when needed.</li>
<li>Use <a href="https://github.com/syntaxhighlighter/syntaxhighlighter" rel="nofollow ugc">Syntax Highlighter 4</a> by Alex Gorbatchev</li>
<li>Ability to override global options and use individual options for each code block</li>
<li>Custom Font Size</li>
<li>Support TinyMCE Visual mode and Text Mode (Quick Tags), it also supports the Quick tags used in the admin comment page (screenshot 5)</li>
<li>Use similar pattern with <a href="https://wordpress.org/plugins/aph-prism-highlighter/" title="APH Prism Highlighter" rel="ugc">APH Prism Highlighter</a> and <a href="https://wordpress.org/plugins/crayon-syntax-highlighter/" title="Crayon Syntax Highlighter" rel="ugc">Crayon Syntax Highlighter</a> plugins, so your code will still work using those plugins</li>
<li>Language added: dark plain (console style) and light plain</li>
</ul>
<h3>How To Use</h3>
After installing the plugin, go to the admin setting Settings > Syntax Highlighter to configure the global setting including the highlighter languages you want to load, theme, etc…
In the TinyMCE menu (add or edit post or page), there is a new button that can be used to pop up the code editor, simply copy-paste your code and fill in some options
This new button also can be found at the quick tags of comment editor in the Admin Edit Comments page. This quick tag appears when you edit or reply a comment.

APH Syntax Highlighter

Bringing SyntaxHighlighter 4 by Alex Gorbatchev into Wordpress easily. Easy to use with user-friendly GUI. Write-edit code in place

Amit Gupta

iG:Syntax Hiliter allows you to post source code to your site with syntax highlighting and formatting (as seen in code editors, IDEs). You can paste the code as is from your code editor or IDE and this plugin will take care of all the code colouring and preserve your formatting. It uses the <a href="http://qbnz.com/highlighter/" rel="nofollow ugc">GeSHi library</a> to colourize your code and supports over a 100 programming languages. Most common languages are included with the plugin and it includes drop in support for more languages used by GeSHi.
NOTE : For fast results and less load on your server, you should have a cache plugin installed. That way the plugin won’t have to parse the code blocks on a post every time its loaded in browser.
<h4>Minimum Requirements</h4>
<ul>
<li>WordPress 4.1 or above</li>
<li>PHP 7.4.0 or above</li>
</ul>
Pull requests are welcome on Github.
Github: <a href="https://github.com/coolamit/ig-syntax-hiliter/" rel="nofollow ugc">https://github.com/coolamit/ig-syntax-hiliter/</a> 
<a href="https://github.com/coolamit/ig-syntax-hiliter/blob/master/README.md" rel="nofollow ugc">Documentation on plugin usage and configuration</a>

iG:Syntax Hiliter

A plugin to easily present source code on your site with syntax highlighting and formatting  (as seen in code editors, IDEs).

APH Syntax Highlighter vs iG:Syntax Hiliter