Md.Mehedi Hasan

This plugin adds a custom “Read More Toggle” block to the WordPress block editor. It allows users to create toggle sections where only part of the content is initially visible, with an option to expand or collapse the rest of the content. This can be useful for creating more dynamic and engaging posts, hiding long text, or organizing content in a clean and space-efficient way.
The block is fully customizable and provides easy-to-use settings to control the toggle behavior, including the ability to add custom labels for the “Read More” toggle.
<h3>Arbitrary section</h3>
For more advanced users, the plugin also allows customization of the toggle style via CSS. You can add your custom styles in the WordPress Customizer or theme’s stylesheet.

Brijesh Mishra

Show required content and let user click on read more. Visitors will see readmore link on the page, when they will click, rest of the content appear with very simple animation on the same page.
Features
<ul>
<li>This plugin will effect only on pages</li>
<li>Select check box to show read more on the pages</li>
<li>Control option shows on all pages, you can select to show readmore on the page</li>
<li>Define the width to show from the page.</li>
<li>Very simple and easy to use</li>
</ul>

ReadMore ReadLess

ReadMore ReadLess will hide content on page.  Clicking on readmore will show complete page without refreshing the page.

Read More Toggle Block vs ReadMore ReadLess