On the Mac, scroll bars are essential for both orienting yourself and navigating within a Web page or document window. But they may not appear unless you hover the pointer over the right spot or start scrolling with a gesture on a trackpad or a turn of a mouse scroll wheel. If that bothers you, go to System Preferences > General and under Show Scroll Bars, select Always. That way, scroll bars will always be visible without you having to guess where they are or perform some incantation to reveal them.
Whenever you view a document that’s longer than will fit onscreen, a scroll bar appears (often only if you’re actively scrolling). That’s true whether you’re using an iPhone, iPad, or Mac. Inside the scroll bar is a control called a scroller that you can drag to scroll more quickly than by swiping or using keyboard keys. But did you know its size and position are useful for orienting yourself within the page? First, the scroller position within the scroll bar reflects how far down the page you are. Second, the size of the scroller indicates what percentage of the page appears onscreen. When you see a large scroller, most of the page is showing. With a small scroller, what you see is only a portion of a longer page. Combine the size and position of the scroller, and you can tell at a glance where in a page you are, and how much is left to read.
(Featured image by Taylor Wilcox on Unsplash)
In previous versions of iOS, a scroll bar would appear on the right edge of the screen while you were swiping through a long Web page, email message, or document. But the scroller was merely an indicator of where in the page you were and how much content there was (the bigger the scroller, the less content). In iOS 13 and iPadOS 13, however, Apple has made the scroll bar more helpful, and you’ll want to use it to scroll long pages more quickly than you can with swiping. To use the scroll bar, swipe slightly to make it appear, press and hold the scroller, and drag it to scroll. The only hard part is that it can be tricky to grab since it disappears a few seconds after you stop scrolling, and it’s a thin target to hit with a thick finger. But give it a try since it makes scrolling in long pages so much easier.