
Although Windows 11 can automatically adjust the display scaling settings to ensure that elements (text, icons, navigations, and others) are the right size and readable, it's not perfect, and sometimes, adjusting the settings manually may be necessary.
For example, if you do not have perfect eyesight, making the elements bigger on the screen could make things easier to see and use, avoiding stressing your eyes. If you connect an external monitor, using a custom scale setting can help increase the size of the text, icons, and menus across the displays. Changing the display scale may also improve content visibility while showing a PowerPoint presentation on a projector.