Sybre Waaijer

Hover Highlights is a simple WordPress plugin that adds a subtle highlight effect to the Gutenberg/Block Editor. When you hover over a block, it gets highlighted with a dashed outline and a box-shadow. The highlight disappears when you focus on the block to reduce distraction.
This plugin is ideal for content creators who want to visually distinguish individual blocks within the Block Editor.
The code and this readme are mostly written by ChatGPT.

Hover Highlights – Editor highlighting

Adds highlighting on hover with a distraction-free experience for the Gutenberg/Block Editor.

digihero

Auto SyntaxHighlighter is a WordPress Code highlight plugin.
It’s used alexgorbatchev SyntaxHighlighter JavaScript package.
Autoload SyntaxHighlighter only requisite js files and display you code.
Github address: https://github.com/wkii/Auto-SyntaxHighlighter
Support languages see: SyntaxHighlighter Brushes.
Full Support for : AppleScript, ActionScript3, Bash/shell, C#, C++, CSS, Delphi, Diff, Groovy, JavaScript, Java, Perl, PHP, Plain Text, Python, Ruby, Sass, Scala, SQL, Visual Basic and XML/HTML…
It’s advantages:
<ul>
<li>Don’t write database;</li>
<li>Don’t need settings;</li>
<li>Deactivate plugin code can also display properly;</li>
<li>Code can switch visual editing mode or HTML mode;</li>
<li>With the w3c standards;</li>
<li>Insert code small tools;</li>
<li>Automatic and only loading requisite files;</li>
<li>Write code to support non-administrator</li>
</ul>

Auto SyntaxHighlighter

Auto SyntaxHighlighter is a WordPress Code highlight plugin. Use editor botton, in the pop-up window, paste or write your code, oh, very simple.

Hover Highlights – Editor highlighting vs Auto SyntaxHighlighter