Under Display & Text Size, you can toggle on and off "Bold Text" or "Increase Contrast" to reduce transparency and darken colors, all of which may make reading the screen easier on your eyes.

A handy tool for presentations, demos and even accessibility, ZoomIt lets you zoom in on the screen, mark up the current page, and even capture your screen activity.

How to zoom in on Windows using Magnifier In the Start menu search box, type "Magnifier" and click the program when it appears in the search results. Start the Magnifier app from the Start menu.

If you're having a hard time reading the text on your iPhone, here's how to make the text on your screen larger in just a few simple steps.

You can turn on the Bold Text toggle switch, for example, while Increase Contrast is another option that makes text easier to see against a background of a similar color.

If you label images in PowerPoint, you might have noticed that it's difficult to change the size of the text label and the image at the same time, unless you know this quick trick.