This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Pym.js Embeds


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:


This plugin provides 1 block.

  • Pym.js Embeds


  1. In the WordPress Dashboard go to Plugins, then click the Add Plugins button and search the WordPress Plugins Directory for Pym.js Embeds. Alternatively, you can download the zip file from this Github repo and upload it manually to your WordPress site.
  2. Activate the plugin through the ‘Plugins’ screen in WordPress
  3. In Settings > Pym.js Embed Settings, decide whether you’d like to change the plugin’s behavior to use a non-default source URL for Pym.js, and whether you’d like to prevent post authors from setting embed-specific URLs for Pym.js
  4. Begin embedding content!


For answers to frequently asked questions, see this plugin’s documentation on GitHub.

For support resources, see this plugin’s documentation on GitHub.


There are no reviews for this plugin.

Contributors & Developers

“Pym.js Embeds” is open source software. The following people have contributed to this plugin.


Translate “Pym.js Embeds” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


  • Now tested up to WordPress 5.4 and Gutenberg 7.8.
  • Fixes a presentational error in the Pym.js Embeds Block’s block inspector control within the editor. PR #74 for issue #72.

New features:

Other updates:

  • Adds credit to GitHub user eidietrich for PR #55 in the release notes.
  • Fixes a ‘nwesroom’ typo. PR #66 for issue #65.

  • Plugin is now tested against WordPress 5.0 beta 3.
  • Adds support for WordPress 5.0.
  • Fixes bug where the Pym.js Embeds block did not work in WordPress 5.0. PR #58 for issue #57.
  • Adds advice for where to host graphics files. PR #55 from Github user eidietrich.

This is a major update! Please read the release notes.

Following the practice begun at plugin version 1.1.2 of having the plugin version number match the version number of the bundled copy of Pym.js, the first three numbers in this plugin’s version do not change with this release because the Pym.js version has not changed. We’ve tacked a .1 on to the end to denote this release. Please read the release notes and test your site as appropriate before upgrading in production.

We wish to thank all who helped us test the release candidate for this version, including Mike Janssen at and Alyson Hurt at the NPR Visuals Team.

New features:

  • Plugin renamed from “Pym Shortcode” to “Pym.js Embeds”.
  • Adds a “Pym.js Embed” block for use in Gutenberg. PR #34 for issue #28.
    • If a block is created using this plugin and Gutenberg, and Gutenberg is then disabled, the block will show a link to the embedded graphic.
  • Through the settings page, you can now serve Pym.js using your newsroom’s CDN or NPR’s CDN! PR #45 for issue #31.
  • Adds a settings page, available to those users with the manage_options capability, with the following options:
    • Change the default pymsrc URL. PR #45 for issue #8.
    • Override block and shortcode pymsrc URLs with the default pymsrc URL. PR #45 for issue #8.
  • Adds an informational page, available to all who can make posts, that lists the plugin’s default source URL for Pym.js. This is to make the process of building new interactives easier.
  • Shortcode now gains an explicit align="" parameter, so that WordPress’s generated alignment CSS classes can be used on embeds. By enabling this in the shortcode, the Gutenberg Block also gains support for alignment. PR #34. Prior to this release, the alignment classes could be added via the class="" parameter.
  • Script tags for embeds are no longer output by the_content(), instead being output during wp_footer() by closures hooked on the 'wp_footer' action. PR #34 for issues #33 and #35.
  • The script tag used to run new pym.Parent is now configurable. By replacing the pluggable function pym_shortcode_script_footer_enqueue() with your own function, you can now use alternate forms of embed code that may be required for PJAX sites or custom versions of Pym.js. This resolves issue #19.
  • Adds “Requires PHP: 5.3” metadata to the plugin’s readme.txt, since we’re now using PHP namespaces for some code.
  • Adds documentation for how to test the plugin:
    • tests to run before enabling the “override pymsrc” option in production
    • tests to run for site compatibility with Gutenberg


  • The source URL for pymjs, known as the pymsrc URL, is now passed through wp_http_validate_url. PR #45 for issue #8.
  • The source URL for pym.js is no longer output by the_content(), instead being output during wp_footer by an action dedicated to the task. If different shortcodes and/or blocks on the page specify different source URLs for Pym.js, all are output (after removing duplicates), but a message is logged in the browser console. If WP_DEBUG is set, this message is also logged to the server log, with the post ID specified. PR #34 for issues #33 and #35. See
  • docs/ becomes docs/
  • Script tags for embeds are no longer output by the_content(), instead being output during wp_footer() by closures hooked on the 'wp_footer' action. PR #34 for issues #33 and #35.


  • Script tags for embeds are no longer output by the_content(), instead being output during wp_footer() by closures hooked on the 'wp_footer' action. PR #34 for issues #33 and #35.


  • RECOMMENDED UPDATE : Pym.js users, NPR has released an update that closes a potential security hole. We recommend everyone update to 1.3.2.
  • Update to Pym.js version 1.3.2: (Changelog at


  • Update to Pym.js version 1.3.1: (Changelog at
  • (we skipped pym.js version 1.3.0:


  • Update to Pym.js version 1.2.2: (Changelog at )
  • (we skipped Pym.js version 1.2.1: )
  • Add id="" attribute to allow setting custom IDs on embeds. #21
  • Add class="" attribute to allow setting custom classes on embeds. #22 and #23.
  • Add a default class name pym to all embed-containing div elements output by this plugin, and a filter ‘pym_shortcode_default_class’ to allow changing it.


  • Update to Pym.js version 1.2.0: (Changelog at )
  • Fixes a bug where the pymsrc attribute might have been ignored, for real this time. Thanks, lchheng!


  • Update to Pym.js version 1.1.2:
  • Switch the new default url of Pym.js in this plugin to js/pym.v1.min.js, leaving the existing js/pym.js where it is.
  • Provide additional notes in the documentation for maintainers on updating Pym.js in this plugin
  • Fixes a bug where the pymsrc attribute might have been ignored
  • Fixes and corrections to documentation.


  • First release of the plugin