This is a desktop-only theme component that adds the ability to open iframes in lighboxes

Github repository link

This component adds an “expand” button on top of iframes you enable it on:

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Clicking the button will open the iframe in fullscreen in a lightbox:

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Clicking either the dark area around the iframe or the x at the top right corner closes the lightbox. The same way it works for default image lightboxes.


You target the iframes based on their origin domains in the component’s settings:

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:warning: Whatever domains you specify here also need to be whitelisted in the allowed_iframes setting to show up in posts in the first place.

Usage examples:

Here’s a couple of examples besides the CodePen iframe above

Google forms iframe:

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Embedding the entire website:

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How do I install this?

You install this component just like any other theme. Follow the instructions in the official guide:

Once you’re done, simply add the component to your current theme. Done!


This component uses Noël Bossart’s fantastic Featherlight library (MIT license - 3kb gzip)