Network Style Override WP Registry grade A. No security issues foundWP RegistryNo security issues foundOpen the reportA

Network-wide CSS and theme.json overrides for WordPress Multisite. Enforce brand consistency across all subsites from a single admin panel.

Network override theme.json

Features

• CSS Override — CodeMirror editor, appended after all theme stylesheets (priority 9999)
• Theme Overrides — Per-theme CSS and theme.json overrides with visual fields (colors, typography, spacing, borders) + raw JSON editor
• Deep Merge — Values merged into the Global Styles (user) layer via wp_theme_json_data_user
• Per-Site Exemptions — Network admin can exempt individual sites
• Revision History — Last 10 saves with one-click restore
• Preview — Test changes on a live site before saving
• Import / Export — JSON bundle for dev → staging → production promotion
• Block Theme Aware — theme.json applies to block themes only; classic themes get CSS only

Requirements

• WordPress Multisite 6.8+
• PHP 8.3+
• Network activation only

Installation

From GitHub Release (recommended)

1. Download the latest network-style-override.zip from Releases
2. Upload via Network Admin → Plugins → Add New → Upload Plugin
3. Network Activate from Network Admin → Plugins

The plugin includes automatic updates — you'll see new versions in WordPress like any other plugin.

Via Composer

composer require soderlind/network-style-override

Note: Requires a Composer-based WordPress setup (e.g., Bedrock) with a repository pointing to Packagist or a custom VCS repository.

For Development

cd wp-content/plugins
git clone https://github.com/soderlind/network-style-override.git
cd network-style-override
composer install
npm install && npm run build

Then Network Activate from Network Admin → Plugins.

Usage

Navigate to Network Admin → Themes → Override Style.

Development

# Start dev server (hot reload)
npm run start

# Production build
npm run build

# Run PHP tests
composer test

# Lint JS
npm run lint:js

Project Structure

├── network-style-override.php   # Plugin bootstrap
├── src/
│   ├── Plugin.php                 # Hook wiring
│   ├── Admin/                     # Network admin page, REST API, Edit Site screen
│   ├── Override/                  # CSS + theme.json injection
│   ├── Preview/                   # Transient-backed draft preview
│   └── Storage/                   # Settings + Revisions repositories
├── resources/js/
│   ├── index.jsx                  # React entry
│   ├── api.js                     # REST client
│   └── components/                # React UI
├── build/                         # Compiled assets
├── languages/                     # POT file
└── tests/                         # PHPUnit + Brain Monkey

Hooks

REST API

All endpoints require manage_network capability.

License

GPL-2.0-or-later

Author

Per Søderlind