<i>&quot;This makes me skeptical. And based on what I see in the wild... lots of loading progress bars, etc, I don&#x27;t see widespread use of this technique.&quot;</i><p>If you&#x27;re looking for a &quot;big&quot; site that does this, then: Yelp. All of the content on yelp.com is statically rendered, with progressive enhancement.  Turn off javascript, site still works. It looks nearly the same, in fact. So go inspect source to your heart&#x27;s content.<p>There&#x27;s really no magic to it, and nothing of which to be skeptical: you first generate static HTML and CSS, and you treat javascript as an <i>enhancement</i> to that content, rather than as as the content itself. This is the way things were done for years. It&#x27;s only since 2013 or so that people have lost track of this &quot;ancient&quot; art.