"Safari has a nice Reader View feature, which removes clutter from websites to make them reader-friendly. If Reader View is available on any website, Safari now shows the text: "Reader View Available" in the address bar. Just tap the three horizontal lines on the left side of the address bar to activate it. Once activated, you can increase or decrease font size as well, which wasn't possible in iOS 7. Tap the big A button at the top of the page to increase text size and the small button to reduce it."
How long have you known about Reader View Available?