Takashi Fujisaki

<p>Syntax Highlight Nano adds beautiful, customizable syntax highlighting to WordPress’s core code block.<br />
It integrates seamlessly with the Gutenberg editor, providing a consistent look and feel between the editor and the frontend.<br />
Because it extends the existing “Code” block, there is no need for a separate custom block or switching between different block types.<br />
This plugin is built on top of <strong>highlight.js</strong>, ensuring accurate and performant syntax highlighting for a wide variety of languages.</p>
<h4>Features</h4>
<ul>
<li><strong>Automatic language detection</strong>: Intelligently detects the programming language of your code.</li>
<li><strong>Customizable header</strong>: Optionally display a header above the code block with a filename or language name.</li>
<li><strong>Line numbers</strong>: Toggle line numbers on or off to improve code readability.</li>
<li><strong>Copy to clipboard button</strong>: A convenient button appears on hover, allowing users to copy the code with a single click.</li>
<li><strong>Lightweight and performant</strong>: Uses highlight.js for efficient, optimized syntax highlighting.</li>
<li><strong>WordPress best practices</strong>: Built following WordPress development standards.</li>
</ul>
<h4>How to Use</h4>
<ol>
<li>Install and activate the plugin.</li>
<li>In the WordPress editor, add a standard “Code” block.</li>
<li>Enter your code.</li>
<li>In the block settings sidebar, you can:
<ul>
<li>Select a programming language (or leave it for automatic detection).</li>
<li>Add a filename.</li>
<li>Toggle header visibility.</li>
<li>Toggle line number visibility.</li>
</ul>
</li>
<li>The code block will be automatically highlighted on the frontend.</li>
</ol>
<h3>Privacy</h3>
<p>This plugin does not collect any personal data. It does not set cookies or connect to external services. All processing happens locally on your server and in the user’s browser.</p>
<h3>Credits</h3>
<p>This plugin uses highlight.js (BSD 3‑Clause License).<br />
Copyright (c) 2006, Ivan Sagalaev<br />
https://github.com/highlightjs/highlight.js</p>
<h3>Support</h3>
<p>For support, feature requests, and bug reports, please visit:<br />
https://github.com/takashifujisaki/syntax-highlight-nano/issues</p>


Syntax Highlight Nano

Adds modern syntax highlighting to WordPress's standard code block using the robust highlight.js library.

Vicky Agravat

<p>CodeMirror Blocks is useful for developers blog, tutorial site where to display formatted (highlighted) code of any program.<br />
It supports 100+ Programming, Scripting and MarkUp Language, with 56 Different Themes.</p>
<p>The Code Block is dependent on a <a href="https://codemirror.net/" rel="nofollow ugc">CodeMirror</a> library.</p>
<p>Formatted Code Block is like (syntax highlighting feature) that displays source code, in different colors and fonts according to the category of terms. It is one strategy to improve the readability and context of the text; especially for code that spans several pages. The reader can easily ignore large sections of comments or code, depending on what they are looking for.</p>
<p>This plugin is just plug and play, no tedious configurations or hacks, just install, activate and start using block inserter.</p>
<p><strong>Features</strong></p>
<ul>
<li>Control Panel Added on top of the Code Block.<br />
** It displays language/filename.<br />
** It also display three buttons, includes Run/Execute, FullScreen, Copy Code.</li>
<li>Web editor (Execution of HTML, CSS JavaScript block) With CodeMirror Block 1.1</li>
<li>Option Page for set default options</li>
<li>Highlight Active Line (now available on CodeMirror Block 1.1)</li>
<li>CodeMirror Block 1.1 now support Block align (Wide Width, Full Width) if your theme Supports.</li>
<li>
<p>Classic Editor Support (Partial)</p>
</li>
<li>
<p>Lightweight and fast</p>
</li>
<li>Secure code with using clear coding standards</li>
<li>Intuitive interface with many settings</li>
<li>Cross browser compatible (work smooth in any modern browser)</li>
<li>Works also on android mobile browser</li>
<li>Compatible with all Default WordPress themes (tested with Latest Twenty Twenty-Four)
<ul>
<li>Twenty Twenty-Four</li>
<li>Twenty Twenty-Three</li>
<li>Twenty Twenty-Two</li>
<li>Twenty Twenty-One</li>
<li>Twenty Twenty</li>
</ul>
</li>
<li>Also Compatible with other third-party themes.</li>
</ul>
<p><strong>Key features include</strong></p>
<ul>
<li>Code syntax highlighting</li>
<li>Line number (On/Off) option</li>
<li>56 Themes (all provided themes from CodeMirror)</li>
<li>100+ Programming languages (all most provided languages from CodeMirror)</li>
<li>Programming language selection option</li>
<li>Loading CodeMirror files on pages only when needed</li>
</ul>
<p><strong>A list of supported themes:</strong></p>
<ul>
<li>3024 day</li>
<li>3024 night</li>
<li>Ambiance mobile</li>
<li>Ambiance</li>
<li>Base16 dark</li>
<li>Base16 light</li>
<li>Blackboard</li>
<li>Cobalt</li>
<li>Colorforth</li>
<li>Eclipse</li>
<li>Elegant</li>
<li>Erlang dark</li>
<li>Lesser dark</li>
<li>Liquibyte</li>
<li>MBO</li>
<li>MDN-like</li>
<li>Midnight</li>
<li>Monokai</li>
<li>Neat</li>
<li>Neo</li>
<li>Night</li>
<li>Paraiso dark</li>
<li>Paraiso light</li>
<li>Pastel on dark</li>
<li>Rubyblue</li>
<li>Reactjs.org Theme</li>
<li>Solarized</li>
<li>The matrix</li>
<li>Tomorrow night bright</li>
<li>Tomorrow night eighties</li>
<li>TTCN</li>
<li>Twilight</li>
<li>Vibrant ink</li>
<li>XQ dark</li>
<li>XQ light</li>
<li>Zenburn</li>
</ul>
<h3>Credits</h3>
<ul>
<li>This Plugin use CodeMirror library to highlight <code>Code Blocks</code>. <a href="https://codemirror.net/" rel="nofollow ugc">CodeMirror</a> is an open-source project shared under the <a href="https://codemirror.net/LICENSE" rel="nofollow ugc">MIT license</a>.</li>
</ul>


CodeMirror Blocks

Thanks for creating this great tool. It solves my problem. It works as you have described. I love the preview running option. Great work. Keep rocking, brother. 

Perfect Syntax Highliter with Preview Mode

Top great work!


Good plugin, thanks for sharing. I have question I know you removed the run/execute button for HTML, CSS and JavaScript due to security issue XSS. but are you willing to add again after fixing it maybe?


Good plugin

CodeMirror Blocks is useful for tutorial site where display formatted (highlighted) code block. With support of 100+ Language/Mode and 56 Themes.

Syntax Highlight Nano vs CodeMirror Blocks