View web page source code on iOS
Add the following as a bookmark. I call mine View Source. It will open up a new window with the HTML source. 

javascript:(function()%7Bvar%20a=window.open(%22about:blank%22).document;a.write(%22%3C!DOCTYPE%20html%3E%3Chtml%3E%3Chead%3E%3Ctitle%3ESource%20of%20%22+location.href+'%3C/title%3E%3Cmeta%20name=%22viewport%22%20content=%22width=device-width%22%20/%3E%3C/head%3E%3Cbody%3E%3C/body%3E%3C/html%3E');a.close();var%20b=a.body.appendChild(a.createElement(%22pre%22));b.style.overflow=%22auto%22;b.style.whiteSpace=%22pre-wrap%22;b.appendChild(a.createTextNode(document.documentElement.innerHTML))%7D)();