Pavel

The “Light Code Block” plugin is a simple and lightweight solution for inserting and displaying code snippets in posts and pages. 
It works by adding a custom “LC” button to the TinyMCE (Classic) editor or a code block in the Gutenberg editor.
The inserted code will be shown on the front end in a clean, readable format.
<h3>Usage</h3>
<ul>
<li>Install and activate the plugin.</li>
<li>Go to the post or page edit screen.</li>
<li>In the TinyMCE (Classic) editor, click the “LC” button in the toolbar.</li>
<li>In the popup window that opens, paste or write your code, and click OK.</li>
<li>Save or update your post.</li>
</ul>
The code will be saved inside a special block and displayed on the front end within a <code><pre></code> tag with the class <code>mce-simple-code-block</code> (i.e., <code><pre class="mce-simple-code-block">...</pre></code>).
To insert code using the Gutenberg editor, you first need to add a Classic (TinyMCE) block, and then use it to insert your code.

Light Code Block

The "Light Code Block" plugin is the simplest and lightest plugin for inserting and displaying code.

Automattic

Alex Mills

Donncha O Caoimh (a11n)

Now with support for the new block editor in WordPress 5.0!
SyntaxHighlighter Evolved allows you to easily post syntax-highlighted code to your site without losing its formatting or making any manual changes. It uses the <a href="http://alexgorbatchev.com/wiki/SyntaxHighlighter" rel="nofollow ugc">SyntaxHighlighter JavaScript package by Alex Gorbatchev</a>.
For a live demo, see <a href="https://alex.blog/wordpress-plugins/syntaxhighlighter/" rel="nofollow ugc">this plugin’s homepage</a>.
For a list of supported languages (most widely used languages are supported), see the <a href="http://en.support.wordpress.com/code/posting-source-code/" rel="nofollow ugc">WordPress.com support document</a>.
Development of this plugin is <a href="https://github.com/Automattic/syntaxhighlighter" rel="nofollow ugc">on GitHub</a>. 
Translation of the plugin into different languages is on the <a href="https://translate.wordpress.org/projects/wp-plugins/syntaxhighlighter" rel="nofollow ugc">translation page</a>.
<a href="http://en.blog.wordpress.com/2009/12/02/better-source-code-posting/" rel="nofollow ugc">As seen on WordPress.com.</a>

SyntaxHighlighter Evolved

Just what I was looking for.
Thank you guys.

Perfect

I'm a longtime user of syntaxhighlighter evolved, so thanks for the excellent plugin!

The only downside I've recently experienced is the lack of bbPress integration, hence 4 stars rather than 5. If you need this for non-bbPress projects, this is a great choice.

longtime fan, but no bbpress support


It works and show code beautifully on pages, But if you copied that code and want to use it, the it shows errors, Looks like it add some spaces,



I tried it with php shorcode, and when i copied the code from the frontend of the page, It gives Parse error: syntax error, unexpected...


Works, But if you copy code and wan to to use it show error

Easily post syntax-highlighted code to your site without having to modify the code at all. As seen on WordPress.com.

Light Code Block vs SyntaxHighlighter Evolved