# CodePen embed no longer working

**URL:** https://meta.discourse.org/t/codepen-embed-no-longer-working/386399
**Category:** Support
**Tags:** onebox, embedding
**Created:** [October 22, 2025, 5:06am UTC](https://meta.discourse.org/t/codepen-embed-no-longer-working/386399 "2025-10-22T05:06:23Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![jahan\_gagan](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jahan_gagan/32/501948_2.png) [@jahan\_gagan](https://meta.discourse.org/u/jahan_gagan)
#### Post date: [October 22, 2025, 8:33am UTC](https://meta.discourse.org/t/codepen-embed-no-longer-working/386399/2 "2025-10-22T08:33:20Z")

</div>

Check your `allowed_iframes` site setting and make sure the CodePen embed URL pattern is listed there.  
Also verify that `allowed_onebox_iframes` isn’t too restrictive.  
Finally, confirm that `codepen.io` isn’t included in `blocked_onebox_domains`.

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_[View the full topic](https://meta.discourse.org/t/codepen-embed-no-longer-working/386399)._