RRZE CodeBox

A plugin to display code highlighting via the WordPress BlockEditor

by RRZE Webteam · github.com/rrze-webteam/rrze-codebox · website

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Install

No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:

wp plugin install https://github.com/rrze-webteam/rrze-codebox/archive/refs/heads/main.zip

Readme github.com/rrze-webteam/rrze-codebox ↗

Displays syntax-highlighted code blocks in posts and pages via a WordPress block. Highlighting runs server-side using highlight.php.

Features

Syntax highlighting for 13 languages (server-side, via highlight.php)
Light and dark theme, switchable per block
Optional line numbers with configurable start number
Syntax highlighting toggle per block
Language label display toggle
Caption with optional source URL
Copy-to-clipboard button (vanilla JS, no jQuery)

All configuration lives in the block's toolbar and inspector controls.

Documentation

https://www.wp.rrze.fau.de/plugins/inhaltsseiten-mit-funktionen-erweitern/rrze-codebox/.

Requirements

WordPress 6.8+
PHP 8.2+

Installation

Download the latest release from GitHub. Activate the plugin on a single site or network-activate it on Multisite.

Multisite

Fully Multisite-capable. Block attributes are stored per post.

Accessibility

Frontend output meets WCAG 2.2 AA. Both the light and dark theme provide sufficient contrast. The copy and download buttons are keyboard-operable with visible focus indicators and screen-reader labels.

License

GPLv3 or later

Development

npm run test:unit -- --runInBand
npm run test:php
npm run build

The PHP checks use the surrounding WordPress installation's parser and HTML filters without loading its database or activating plugins. For a standalone checkout, pass the WordPress root: npm run test:php -- /path/to/wordpress.

Maintainer

RRZE Webteam (webmaster@fau.de)

No external services, no cookies, no browser storage, no plugin-specific database tables or options.