In most online text editors you usually search for the same small set of fonts available. Why is there a small set and why are there only these fonts? Because they are usually installed on your device. These are usually called “safe on the web” fonts.
See, the fonts available on your computer are set by using the fonts sent to the operating system, the applications you add, and the individual fonts entered manually. you added.
As you can imagine, the resulting list of installed fonts can vary greatly from device to device. However, a subset of fonts (stylish font) is considered to be the minimum standard denominator because they are almost always located.