Josh Hunt

Huntsman Dark Mode Site Icon allows you to set a separate site icon for light and dark mode.
Upload one icon for light mode using WordPress’s built-in Site Icon, and upload a separate icon for dark mode using this plugin. The appropriate icon is then displayed automatically based on the visitor’s system theme.
No code or configuration is required. If no dark mode icon is set, WordPress behaves exactly as normal.
<h3>Key Features</h3>
<ul>
<li>Separate site icons for light mode and dark mode</li>
<li>Simple upload interface in the WordPress admin</li>
<li>Works on the frontend, admin area, and login screen</li>
<li>Optional enable/disable toggle</li>
<li>Does not replace or override the core WordPress Site Icon</li>
<li>Accessable via the WP API</li>
</ul>
<h3>Usage</h3>
<ul>
<li>
Site Icon (WordPress) 
This is the default WordPress Site Icon and is still managed by WordPress.
</li>
<li>
Dark Mode Site Icon 
This icon is only used when the user’s system is in dark mode and the browser supports <code>prefers-color-scheme</code>.
</li>
</ul>
If the Dark Mode Site Icon is not set, the plugin does nothing and WordPress behaves normally.
<h3>REST API</h3>
The plugin exposes a public REST endpoint for accessing the Dark Mode Site Icon:
<pre><code>/wp-json/hdmsi/v1/icons
</code></pre>
Example response: 
{ 
“enabled”: true, 
“dark”: { 
“id”: 123, 
“url”: “https://example.com/icon-dark.png” 
} 
} 
A dark-mode Web App Manifest is also available at:
<pre><code>/wp-json/hdmsi/v1/manifest?mode=dark
</code></pre>

Huntsman Dark Mode Site Icon

Set separate site icons for light and dark mode based on the visitor’s system theme.

yoren

jtzl

JTZL’s Dark Mode automatically applies dark mode styling to your WordPress site based on your visitors’ operating system preferences. No configuration required – it just works.
Interactive demo: 
https://playground.wordpress.net/?blueprint-url=https://wordpress.org/plugins/wp-json/plugins/v1/plugin/jtzls-dark-mode/blueprint.json
Key Features:
<ul>
<li>Automatic detection using CSS <code>prefers-color-scheme: dark</code> media query</li>
<li>Zero configuration – works out of the box</li>
<li>Privacy-respecting – all detection happens client-side</li>
<li>Theme-agnostic – works with any WordPress theme</li>
<li>Media preservation – images, videos, and embeds display correctly</li>
<li>Developer-friendly – extensible via WordPress filter hooks</li>
</ul>
How It Works:
The plugin uses the CSS <code>prefers-color-scheme</code> media query to detect when a visitor’s operating system is set to dark mode. When detected, dark mode styles are automatically applied without any JavaScript or server-side processing.
Technical Features:
<ul>
<li>Modern PHP 8.2+ architecture with dependency injection (PHP-DI)</li>
<li>Service-oriented design with PSR-4 autoloading</li>
<li>Separate styling strategies for Block themes (CSS variables) and Classic themes (filter inversion)</li>
<li>Comprehensive test coverage with PHPUnit</li>
</ul>
Developer Hooks:
Customize the plugin behavior using these filter hooks:
<ul>
<li><code>jtzl_dark_mode_enabled</code> – Enable/disable dark mode on specific pages</li>
<li><code>jtzl_dark_mode_css_variables</code> – Customize dark mode colors</li>
<li><code>jtzl_dark_mode_custom_css</code> – Add custom CSS rules</li>
</ul>

JTZL's Dark Mode

Automatic dark mode styling based on visitor OS preference using CSS prefers-color-scheme media query.

Huntsman Dark Mode Site Icon vs JTZL's Dark Mode