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:
Demo Page

What’s new in 1.2.0

Line numbers for code blocks
Floating copy-to-clipboard button on every block
Optional filename label (renders as a tab above the code)
Word-wrap toggle per block + global default
Visual theme picker (no more guessing from a dropdown)
Modernized build using @wordpress/scripts
Drops PHP 5.6 / WordPress 6.0 support — now requires PHP 7.4 / WordPress 6.5

Usage

Add the Vaaky Highlighter block in the Gutenberg editor
Paste or write your code
Select a language (optional)
Save and view your page on the frontend

Supported Languages

Apache
Bash
C
C#
C++
CSS
DNS Zone file
DOS
Django
Dockerfile
Go
HTML / XML
Handlebars
JSON
Java
JavaScript
Markdown
Nginx
Objective-C
PHP
Plaintext
PostgreSQL & PL/pgSQL
PowerShell
Python
R
Ruby
Rust
SCSS
SQL / MySQL
Shell
Twig
TypeScript
YAML / YML

Vaaky Highlighter — Syntax Highlighter, Code Blocks, Line Numbers for Gutenberg

What’s new in 1.2.0

Usage

Supported Languages