The most common user eye-scanning pattern, also known as F-Shaped Pattern. This pattern was popularised by an eye-tracking study led by American computer user interface and user experience consulting firm Nielsen Norman Group in 2006, which recorded more than 200 users (in left-to-right reading cultures) looking at thousands of web pages. The study found that users typically scanned heavy blocks of content in a pattern looking like the letter F and including the following three components:
Users first read in a horizontal movement—usually across the upper part of the content area. This initial element forms the F’s top bar.
Next, they scanned a vertical line down the left side of the screen, looking for points of interest in the paragraph’s initial sentences. When they found something interesting, they read across in a second horizontal movement that typically covers a shorter area than the previous movement. This additional element forms the F’s lower bar.
Finally, users scan the content’s left side in a vertical movement.