[andrewstuart]

So this argument can be used these ways:

--headless

--headless=new

--headless=chrome

And each mean something different - but what?

Not documented, very frustrating.

Can you explain the difference between each of the above arguments?

[quenix]

There are two headless mode: "chrome" and "new".

--headless enables the default, which is "chrome".

--headless=new enables "new".