Gary Jones

This plugin adds a Visual Subtitle field to all post, page and custom post types that have support for a title, and that use the Classic Editor. It doesn’t work with the Block Editor.
It allows you to include a string of text that will still be part of the post title, but be wrapped in a <code>span</code> tag, giving something like:
<pre><code><h1>Visual Subtitle</h1>
</code></pre>
Keeping it as part of the main level 1 or two heading, means it maintains as much keyword SEO importance as the main title, yet can be given a style (in your own theme) of <code>display: block;</code> to make it visually appear as a subtitle.
The visual subtitle is appended to to the title on on the Posts screen, separated with a pipe (<code>|</code>) character, and appended to the title part of the document title with a colon (<code>:</code>) character.
<h3>Translations</h3>
<ul>
<li><a href="http://deckerweb.de/material/sprachdateien/wordpress-plugins/#visual-subtitle" rel="nofollow ugc">Deutsch</a></li>
</ul>

Visual Subtitle

Allows part of a post title to be styled as a subtitle. It is still within the title heading, but is wrapped in a span to be styled differently.

Philip Arthur Moore

We Cobble

Right now WordPress currently presents no easy way for web publishers to add subtitles into their posts, pages, and other custom post types. This leaves users and developers in a bit of a quandary, trying to figure out how best to present subtitles in a beautiful and sensible way. Post <a href="https://codex.wordpress.org/Function_Reference/the_excerpt" rel="nofollow ugc">excerpts</a> are a very poor choice for subtitles and the only available option outside of <a href="https://codex.wordpress.org/Custom_Fields" rel="nofollow ugc">custom fields</a>, but custom fields aren’t entirely self-explanatory or user-friendly. This simple, straightforward plugin aims to solve this issue.
Simply download Subtitles, activate it, and begin adding subtitles into your posts and pages today. For more advanced usage of the plugin, please see the <a href="https://wordpress.org/plugins/subtitles/faq/" rel="ugc">Frequently Asked Questions</a>.
If you like Subtitles, <a href="https://www.paypal.me/wecobble" rel="nofollow ugc">thank me with coffee</a>. If you find it buggy, <a href="https://github.com/wecobble/Subtitles/issues" rel="nofollow ugc">tell me on GitHub</a>. And if you have a cool example of how you’re using Subtitles on your website, let me know on <a href="https://twitter.com/philip_arthur" rel="nofollow ugc">Twitter</a>.

Subtitles

Thanks. Hopefully it will get Gutenberg support too when the time comes.

Clean code, no ads or nags, works perfect

Add subtitles into your WordPress posts, pages, custom post types, and themes. No coding required. Simply activate Subtitles and you're ready.

Visual Subtitle vs Subtitles