Noor Alam

<a href="https://wphowto.net/simple-maintenance-plugin-wordpress-595" rel="nofollow ugc">Simple Maintenance</a> plugin can be easily installed to show a maintenance mode page. It allows you to maintain your site on the back end by displaying a temporary maintenance page on the front end.
The plugin does not require any additional configuration or setup. All you need to do is activate it and maintenance mode will be automatically enabled. It is very lightweight yet powerful. It uses the HTML5 layout which makes the maintenance mode page viewable from a mobile device.
<h4>Features</h4>
<ul>
<li>Clean HTML and CSS layout</li>
<li>Responsive maintenance mode page</li>
<li>No customizations required</li>
<li>Easier to manage as the maintenance mode can be turned on by activating the plugin</li>
<li>Notify the search engine crawler that the site is down for a limited period of time</li>
</ul>
For more information please check the <a href="https://wphowto.net/simple-maintenance-plugin-wordpress-595" rel="nofollow ugc">WordPress Maintenance Mode Plugin</a> documentation page

Simple Maintenance

Really simple and to the point. Exactly what I was looking for. I just had to modify the message and the styles a bit.

Great plugin

Display a simple maintenance mode page while your site is undergoing scheduled maintenance

Harish Chouhan

Themeist Co

Build Mode lets you put your WordPress site into maintenance mode or display a coming‑soon page / under‑construction page with one click. Instead of a generic message, you can select and display any page you’ve built — with the Block Editor, Classic Editor, or a page builder. Visitors will see your chosen maintenance or coming‑soon page, styled using your theme’s CSS and JS, while logged‑in administrators continue working behind the scenes.
When Build Mode is active, only the content area of your chosen maintenance page is displayed. The header, footer and navigation are automatically removed.
<h3>Features</h3>
<ul>
<li>Enable or disable Build Mode from the Admin Bar</li>
<li>Choose any page as your custom maintenance, coming‑soon or under‑construction screen</li>
<li>Logged‑in admins bypass maintenance mode automatically</li>
<li>Sends correct 503 and Retry‑After headers (SEO‑friendly)</li>
<li>Lightweight and secure, built with WordPress best practices</li>
<li>Compatible with classic and block themes</li>
<li>Translation‑ready</li>
</ul>
<h3>Use cases</h3>
<ul>
<li>Show a custom under‑maintenance or coming‑soon screen while you redesign or update your site</li>
<li>Let search engines know your downtime is temporary with proper HTTP headers</li>
<li>Keep working on your site privately without showing a broken layout to visitors</li>
</ul>
<a href="https://themeist.com/plugins/build-mode/" rel="nofollow ugc">Plugin Page on Themeist</a> 
<a href="https://github.com/webtions/build-mode" rel="nofollow ugc">GitHub Repo</a>

Build Mode – Maintenance Mode & Coming Soon Page

Maintenance Mode & Coming Soon Made Easy – Display any page as your maintenance or coming-soon screen, no coding required.

Simple Maintenance vs Build Mode – Maintenance Mode & Coming Soon Page