You’ll notice that the terminology for resolution on screen and in print is different. The resolution is defined in terms of pixels per inch in digital displays (a pixel is a tiny square). For print, we use dots per inch (a dot is a tiny circle of ink).

A user’s eye can’t generally determine quality differences above 200DPI. Yet, it's best to use at least 300DPI to deliver crisp, clear images.^[2] One way to check that your image is high resolution for print is to zoom it to at least 200% and see if it still looks clear.