portainer-docs/faqs/troubleshooting/ui-and-features/why-doesnt-the-portainer-ui-load-inside-an-iframe.md

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Why doesn’t the Portainer UI load inside an iframe?

By default, Portainer cannot be embedded in an iframe. This is because the default Content-Security-Policy (CSP) header includes:

frame-ancestors 'none';

This blocks all iframing of Portainer.

If you need to allow iframing, you can disable the CSP header entirely by setting the --no-csp flag when running Portainer.

{% hint style="danger" %} This removes all of the Content-Security-Policy header, so please use it with caution and at your own risk, and only if you need the iframing to work for you. {% endhint %}