Troy Chaplin

Planned Outage for Block Themes is a lightweight plugin that enables maintenance mode for WordPress block themes. When enabled, logged-out visitors see your custom maintenance template while logged-in users can browse the site normally.
Features:
<ul>
<li>Uses native block theme templates</li>
<li>Create maintenance pages in the Site Editor or as theme files</li>
<li>Logged-in users bypass maintenance mode</li>
<li>Configurable expected duration (Retry-After header)</li>
<li>Pre-launch mode for sites that aren’t live yet</li>
<li>Optional search engine bot access during maintenance</li>
<li>Bypass link to let non-logged-in users preview the site during maintenance</li>
<li>Admin bar indicator when maintenance mode is active</li>
<li>Duration warning after 3 days of maintenance (except in pre-launch mode)</li>
<li>Returns proper 503 status code for SEO</li>
<li>Cache plugin detection with admin warning and automatic cache flushing</li>
</ul>
Requirements:
<ul>
<li>WordPress 6.3 or higher</li>
<li>A block theme (like Twenty Twenty-Five)</li>
</ul>

Planned Outage for Block Themes

Simple maintenance mode for block themes. Shows a maintenance template to logged-out visitors.

4wpdev

Anatoliy Dovgun

<h4>Demo</h4>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/JDGOF2B2zqQ?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
4WP Style Switcher reads style variations from the active block theme (<code>theme.json</code> and <code>/styles/*.json</code>).
A plugin by <a href="https://4wp.dev/" rel="nofollow ugc">4wp.dev</a>. 4WP is our project brand; the letters “WP” appear only as part of that brand name, not as a reference to WordPress. This plugin is not affiliated with, endorsed, or sponsored by WordPress.
Source code and releases: <a href="https://github.com/4wpdev/4wp-style-switcher" rel="nofollow ugc">github.com/4wpdev/4wp-style-switcher</a>
<h4>Development</h4>
Human-readable PHP source is in the public GitHub repository above. The plugin ZIP includes <code>src/</code> (PSR-4 autoload via <code>src/Autoload.php</code> when <code>vendor/</code> is absent). No npm build step — front-end scripts ship as plain JS in <code>assets/</code>.
Live demo (WordPress Playground): https://playground.wordpress.net/?blueprint-url=https://raw.githubusercontent.com/4wpdev/4wp-style-switcher/v1.0.0/.wordpress-org/assets/blueprints/blueprint.json
The demo site Style Switcher uses Twenty Twenty-Five: About, Morning, Afternoon, and Evening pages with per-page styles, A/B light vs dark, a bottom-right visitor switcher, and Light/Dark in the header and footer menus.
Page style (editor) — pick a variation for a page; optionally lock it so visitors cannot override it.
Frontend switcher — visitors choose from allowed variations; the choice is stored in localStorage and synced to a cookie for server-side rendering.
Light / Dark (navigation block) — add the Light/Dark block inside Navigation; map two variations (sun/moon icons).
A/B testing — split new visitors between two variations; daily aggregate stats monitor the traffic split.
<h4>Privacy</h4>
When the visitor switcher or A/B testing is enabled, the plugin may store the selected style variation in a browser cookie (<code>forwp_ss_style</code>) and in localStorage on the visitor device. No personal data is sent to third-party services. A/B stats are aggregated counts stored in your WordPress database.
<h3>Blocks</h3>
This plugin provides 1 block.
<ul>
<li>
Light / Dark — menu toggle between two mapped theme style variations (sun/moon icons).Hooks (developers)
</li>
<li>
<code>forwp_style_switcher_variations</code> — filter theme variation list.
</li>
<li><code>forwp_style_switcher_ab_assigned</code> — after A/B cohort assignment.</li>
<li><code>forwp_style_switcher_analytics_track</code> — analytics events.</li>
<li><code>forwp_style_switcher_ab_assignment_enabled</code> — filter A/B assignment.</li>
</ul>

4WP Style Switcher

Apply theme.json style variations per page or let visitors switch styles on the frontend (FSE block themes).

Planned Outage for Block Themes vs 4WP Style Switcher