Actually Mobile Safari does not do this. It simply has: double tap on an element, and it zooms such that the element's width matches the width of your screen.
No reflowing is done. It may not be of much use; when I do this on HN, it only zooms in by a few percent because the elements already stretch most of the way across the screen. You are taking a magnifying glass to the page when you do this, NOT changing the layout to fit the screen and reflowing all the text.
No reflowing is done. It may not be of much use; when I do this on HN, it only zooms in by a few percent because the elements already stretch most of the way across the screen. You are taking a magnifying glass to the page when you do this, NOT changing the layout to fit the screen and reflowing all the text.