What Does Jaggies Mean?
Jaggies is a term for various kinds of anomalies in computer graphics outputs or display imaging. The result displays shape edges composed of small squares or “steps” instead of a smoothly contoured line.
Techopedia Explains Jaggies
An effect called aliasing occurs when multiple sampled signals become confused. This is one reason for jaggies to occur. Jaggies can also happen when a display device lacks resolution, or a bitmap is converted into some other format.