No, the page content is never sent to the server. all the server does is serve a static HTML page with some javascript. The javascript reads the compressed encoded data in the URL (the fragment which browsers never send to the server during a request) and then it decodes the data and writes the data to the current DOM.
All content data is stored in the link itself and never seen by the itty.bitty server.
All content data is stored in the link itself and never seen by the itty.bitty server.