Vova Druzhaev

WordPress 5.0 introduces a block-based editor (codename “Gutenberg”) that offers a streamlined editing experience. 
The plugin provides in the block editor 2 types of spoilers:
<ul>
<li>Little Spoiler</li>
<li>Box spoiler</li>
</ul>
Little Spoiler – small spoiler for plain text.
Box spoiler – consists of 2 blocks: 
Opening spoiler (Box Spoiler Start) and closing spoiler (Box Spoiler End) 
Between them, you insert any block (or several block’s) with content that you want to hide.
In the frontend, the spoiler (accordion) opens with animation. 
In the editor you can choose the color design of the spoiler.
Ability to add new colors or replace a set of colors. See FAQ
Want to hide part of the publication? or make up the FAQ? – plugin is perfect for this
Check out all beauty and power of the plugin by watching this video: 
<iframe class="youtube-player" width="640" height="360" src="https://www.youtube.com/embed/IrC1yVttMho?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"></iframe>
<h3>Requirements</h3>
PHP 5.6+, 7, 7.1, 7.2 or 7.4 recommended for better performance, WordPress 5.8
<h4>Translation</h4>
Available in English, Russian, Ukrainian, Spanish, German, Swedish, Dutch, Japanese, French, Italian, Norwegian, Portuguese and more other languages in becoming.
<h4>Acknowledgements</h4>
Thanks to <a href="https://profiles.wordpress.org/nilovelez/" rel="nofollow ugc">Nilo Velez</a> for Spanish (Spain) translation approval. 
Thanks to <a href="https://profiles.wordpress.org/yordansoares/" rel="nofollow ugc">Yordan Soares</a> for Spanish (Venezuela) translation. 
Thanks to <a href="https://profiles.wordpress.org/tobifjellner/" rel="nofollow ugc">Tor-Bjorn Fjellner</a> for Swedish translation approval. 
Thanks to <a href="https://profiles.wordpress.org/psmits1567/" rel="nofollow ugc">Peter Smits</a> for Dutch translation approval. 
Thanks to <a href="https://profiles.wordpress.org/miccweb/" rel="nofollow ugc">miccweb</a> for Japanese translation approval. 
Thanks to <a href="https://profiles.wordpress.org/fxbenard/" rel="nofollow ugc">FX Bénard</a> for French translation approval. 
Thanks to <a href="https://profiles.wordpress.org/darkavenger/" rel="nofollow ugc">Luisa Ravelli</a> and <a href="https://profiles.wordpress.org/aliceorru/" rel="nofollow ugc">aliceorru</a> for Italian translation approval. 
Thanks to <a href="https://profiles.wordpress.org/meinmycell/" rel="nofollow ugc">Eivind</a> for Norwegian translation approval. 
Thanks to <a href="https://profiles.wordpress.org/pedromendonca/" rel="nofollow ugc">Pedro Mendonça</a> for Portuguese translation approval. 
Thanks to <a href="https://profiles.wordpress.org/sergeykovalets/" rel="nofollow ugc">Sergey Kovalets</a> for Ukrainian translation. 
Thanks to <a href="https://profiles.wordpress.org/jensratzel/" rel="nofollow ugc">Jens Ratzel</a> for German translation.

OtFm Gutenberg Spoiler – (or FAQ) collapse block

The plugin provides in the block editor 2 types of spoilers. Need FAQ or Spoiler?

zetxek

Simple plugin to hide the lyrics of the songs you publish (they will be between [lyrics] and [/lyrics]). You can also use it for spoilers or any text you want to make viwable with a click.
It is SEO friendly and gracefully degrades in environments without javascript because firstly all the text is shown, and only when the page is fully loaded the text enclosed by the [wplyrics] text will be hidden, adding a link to make it visible.

WP Lyrics

Simple plugin to hide the lyrics of the songs you publish (they will be between [lyrics] and [/lyrics]). You can also use it for spoilers or any text  …

OtFm Gutenberg Spoiler – (or FAQ) collapse block vs WP Lyrics