hypercoder

CodeBlock is a free WordPress plugin that enables visitors to copy programming code with a single click. It features:
<ul>
<li>A simple lightweight plugin in with no dependencies; the whole package consist of a PHP, a JavaScript and a CSS file (1.92KB)</li>
<li>Makes use of short-codes</li>
<li>Works with stylized code. That is, it only copies the code not the underlying HTML elements</li>
<li>Spam free. It will never bag (ehm, bug) you for ratings, permissions…etc.</li>
</ul>

HyperCoder CodeBlock

CodeBlock is a free WordPress plugin that enables visitors to copy code blocks with a single click.

kontur.us

This Plugin will add your own ‘kontur Copy Code Button’ to any code-block on your site. When clicked, the code is copied to the clipboard. Works as well on mobile devices and the standard Gutenberg WP-Code-Block.
<h3>Set your own</h3>
<ul>
<li>button-text(s),</li>
<li>button-icon or image from the library,</li>
<li>class(es),</li>
<li>button-color, </li>
<li>button-text-color </li>
<li>the code text colorand “pre”-Background.</li>
<li>NOW: ALL color setting changes in a “live view” for easier styling.</li>
</ul>
<blockquote>
Want more 
 Please get involved and send uns your ideas. Via email or on the WordPress support page 🙂
</blockquote>
<a href="https://wordpress.org/support/article/managing-plugins/#installing-plugins" rel="ugc">More info on installing WP plugins</a>
Uninstalling
This plugin cleans up after itself. All plugin settings will be removed from your database when the plugin is uninstalled via the Plugins screen.

kontur Copy Code Button

Add your own 'kontur Copy Code Button' with your own icon, text, class, color and 'pre' background. Works as well with the Gutenbe …

HyperCoder CodeBlock vs kontur Copy Code Button