MediaArt

This plugin provides shortcodes to show/hide content with an optional accordion behavior:
<ul>
<li>New shortcode: <code>[ma_collapse]...[/ma_collapse]</code> (and <code>ma_collapse_level2..7</code>)</li>
<li>Legacy compatibility: Keeps legacy <code>bg_collapse*</code> shortcodes functional (where possible without breaking other installed plugins).</li>
</ul>
The plugin is written to follow WordPress.org best practices: 
* No inline JavaScript in PHP templates 
* Admin actions protected by capability checks and nonces 
* Sanitization/escaping on output 
* Translatable strings (EN as base; Czech translation included)
<h3>Usage</h3>
Basic: 
 [ma_collapse]Hidden content[/ma_collapse]
With custom label: 
 [ma_collapse more=”Show more” less=”Show less”]Hidden content[/ma_collapse]
Accordion grouping: 
Use the same <code>group</code> attribute on multiple shortcodes. 
 [ma_collapse group=”faq”]Item 1[/ma_collapse] [ma_collapse group=”faq”]Item 2[/ma_collapse]
Legacy: 
 [bg_collapse]Hidden content[/bg_collapse]

Show Hide Accordion by MediaArt

Create collapse/expand sections and accordions via shortcodes (ma_collapse + legacy bg_collapse).

Flector

You can use this plugin to hide part of the text of a post in a nicely-formatted container that will becomes unhidden when clicked on. The plugin can be useful for creating FAQ pages, hiding large pictures, and things like that.
The plugin creates its own “Spoiler” button in the visual editor, but you can also add spoilers directly using tags. For example:
<pre><code>[spoiler title='Title']Spoiler content[/spoiler]
</code></pre>
or
<pre><code>[spoiler title='Title' collapse_link='no']Spoiler content[/spoiler]
</code></pre>
If you liked my plugin, please rate it.

BBSpoiler

This plugin allows you to hide text under the tags [spoiler]your text[/spoiler].

Show Hide Accordion by MediaArt vs BBSpoiler