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iFrame not working on custom domain

Hi there, hope you’re all doing well!

I’m trying to use an iframe to display a website preview (of webflow websites that i’m working on). This works great on my webflow domain (, but not on my custom domain (hosted on AWS) that I recently connected.

Anyone have experience with this issue?

The reason this is happening is because webflow is sending an Content Security Policy directive: “frame-ancestors ‘self’ http://*

As you see it only allows webflow ending domains… i have the same issue btw and i will tell if I find a workaround