From High Sierra page on apple.com: > Automatically use Safari Reader for every web article that supports it, so you can view websites without ads, navigation,

From High Sierra page on apple.com: > Automatically use Safari Reader for every web article that supports it, so you can view websites without ads, navigation, and other distractions. This will come in handy since I hit the reader mode on articles as soon as the page loads and the reader option is enabled. On a side note, I like Firefox too because it has a reader mode built in. While Chrome has plugins to make this happen, having this feature as a first class citizen makes a difference. Of course Chrome has other strengths and I spend a lot of time in it, but I end up using Safari or Firefox for reading on the web.