Lightweight syntax highlighter with code blocks, line numbers, copy-to-clipboard, and 35+ themes. A fast, free alternative to Prism for WordPress.

Kasuga

Sticky Copy Button for Code Blocks

Adds a floating "Copy" button to every code block, with extensive styling options, optional line numbers, max-height control, and custom CSS support.

Raunak Gupta

Vaaky Highlighter is a lightweight syntax highlighter plugin for the WordPress Gutenberg editor. Add beautiful code blocks with line numbers, a copy-to-clipboard button, optional filename label, automatic language detection, and 35+ themes. Powered by Highlight.js — a fast, dependency-free alternative to Prism.
Syntax highlighting is powered by Highlight.js, a fast and dependency-free JavaScript library that supports multiple programming languages and themes.
Vaaky Highlighter is ideal for developers, bloggers, technical writers, and documentation sites who want elegant syntax-highlighted code without unnecessary bloat.
Using it is simple: add the Vaaky Highlighter Sourcecode block in Gutenberg, paste your code, and publish — the plugin handles everything automatically.
View the live demo of all supported themes: 
<a href="https://www.webhat.in/?page_id=626&utm_source=wordpress.org&utm_medium=readme.txt&utm_campaign=link&utm_id=vaaky_highlighter&utm_term=Theme+Demo" rel="nofollow ugc">Demo Page</a>
<h3>What’s new in 1.2.0</h3>
<ul>
<li>Line numbers for code blocks</li>
<li>Floating copy-to-clipboard button on every block</li>
<li>Optional filename label (renders as a tab above the code)</li>
<li>Word-wrap toggle per block + global default</li>
<li>Visual theme picker (no more guessing from a dropdown)</li>
<li>Modernized build using @wordpress/scripts</li>
<li>Drops PHP 5.6 / WordPress 6.0 support — now requires PHP 7.4 / WordPress 6.5</li>
</ul>
<h3>Usage</h3>
<ol>
<li>Add the Vaaky Highlighter block in the Gutenberg editor</li>
<li>Paste or write your code</li>
<li>Select a language (optional)</li>
<li>Save and view your page on the frontend</li>
</ol>
<h3>Supported Languages</h3>
<ul>
<li>Apache</li>
<li>Bash</li>
<li>C</li>
<li>C#</li>
<li>C++</li>
<li>CSS</li>
<li>DNS Zone file</li>
<li>DOS</li>
<li>Django</li>
<li>Dockerfile</li>
<li>Go</li>
<li>HTML / XML</li>
<li>Handlebars</li>
<li>JSON</li>
<li>Java</li>
<li>JavaScript</li>
<li>Markdown</li>
<li>Nginx</li>
<li>Objective-C</li>
<li>PHP</li>
<li>Plaintext</li>
<li>PostgreSQL & PL/pgSQL</li>
<li>PowerShell</li>
<li>Python</li>
<li>R</li>
<li>Ruby</li>
<li>Rust</li>
<li>SCSS</li>
<li>SQL / MySQL</li>
<li>Shell</li>
<li>Twig</li>
<li>TypeScript</li>
<li>YAML / YML</li>
</ul>

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