As I can't give you an exact estimate when it will arrive, seems like a lot of people are already asking for it here: https://github.com/graphcool/chromeless/issues/5#issuecommen...

Please feel more than welcome to take a stab at it yourself and create a PR for this feature! :)

Also interested, this would be excellent fit for a use case I have archiving certain important government websites.

Btw, does the .viewport() option not work in the demo? I'm seeing a `TypeError: Failed to fetch` when I set one.

Interested in this as well!