Weston Ruter

Make your browser speak when <code>wp.a11y.speak()</code> is called. Requires a browser that <a href="http://caniuse.com/#feat=speech-synthesis" rel="nofollow ugc">supports <code>speechSynthesis</code></a> (which all currently do except for IE11).
This is useful for development to simulate what a user experiences when using a screen reader.

Accessibility (a11y) Speech Synthesis

Make your browser speak when wp.a11y.speak() is called.

niatn1012

Guten-bubble can create a speech bubble display like a chat conversation.
Features
<ul>
<li>It’s easy to create speech bubble using Guten-bubble block for Gutenberg editor in WordPress 5.0 or later.</li>
<li>Pick from 24 color themes for speech bubble.</li>
<li>You can use it as an icon image by importing image files from WordPress’s media library. Let’s make interesting articles by using icon image on hand!</li>
</ul>
How to use in block editor
<ol>
<li>Add a Guten-bubble block where you want to add a speech bubble.</li>
<li>Enter serif in the balloon in the block ( the part where ‘Enter serif here …’ placeholder is displayed ), select character icon and set the balloon in the inspector.</li>
</ol>

Guten-bubble

Displays a speech bubble like a chat conversation.

Accessibility (a11y) Speech Synthesis vs Guten-bubble