INN Labs

Pym.js Embeds provides shortcode and Gutenberg block wrappers for embedding responsive iframes using <a href="http://blog.apps.npr.org/pym.js/" rel="nofollow ugc">Pym.js</a>, developed by the NPR Visuals Team. Embedded content resizes vertically to match its container’s width.
AMP compatibility is provided by the <a href="https://wordpress.org/plugins/amp/" rel="ugc">official AMP plugin</a>.
<h3>Pym.js Resources from NPR</h3>
You may also want to look at NPR’s Pym.js resources:
<ul>
<li><a href="http://blog.apps.npr.org/pym.js/" rel="nofollow ugc">Pym.js homepage</a></li>
<li><a href="https://github.com/nprapps/pym.js/" rel="nofollow ugc">Pym.js repo on GutHub/nprapps</a></li>
</ul>

Pym.js Embeds

A WordPress block and shortcode for embedding iframes that are responsive horizontally and vertically, using the NPR Visuals Team's Pym.js.

mathewemoore

RESTposts is the ultimate FREE tool to display and embed posts from WordPress websites. You can use the built-in shortcode generator tool to create the perfect shortcode to display the posts any way you like. Select how many posts you want to display and set your options. Choose from 1, 2, 3 and 4 column display modes with the ability to show or hide the post dates, featured images, excerpts and more! RESTposts is great for websites that want to show posts from other subsites within their multisite network. Just copy and paste the url of the WordPress website you want to display posts from and go!
Features of RESTposts include, but are not limited to:
<ul>
<li>Easy shortcode generator to setup your posts to display.</li>
<li>1, 2, 3 and 4 column display modes.</li>
<li>Sidebar Widget.</li>
<li>Customize the post display to your liking.</li>
<li>Choose how many posts to display.</li>
<li>Option to activate shortcodes in the widget sidebar.</li>
<li>Button to one-click copy the shortcode from the generator.</li>
<li>Button to reset shortcode generator to defaults.</li>
</ul>

RESTposts

Embed posts from your site or others into posts and pages using WP REST API. Great for multisite networks. Sidebar widget included.

Pym.js Embeds vs RESTposts