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For example you could set cookies before visiting another website. This is currently impossible in an iframe but possible in a browser. I've wanted to do this

For example you could set cookies before visiting another website. This is currently impossible in an iframe but possible in a browser. I've wanted to do this to automatically login users on some external websites.

maciekpaprocki 3y ago
That's a security feature. If you would have that in any environment it would be massive security issue. If you actually own the service you can still do that.