Pym.js Embeds provides shortcode and Gutenberg block wrappers for embedding responsive iframes using Pym.js, developed by the NPR Visuals Team. Embedded content resizes vertically to match its container’s width. AMP compatibility is provided by the official AMP plugin. Pym.js Resources from NPR You may also want to look at NPR’s Pym.js resources: Pym.js homepage Pym.js repo on GutHub/nprapps