Noto Sans is a free font provided by Google that covers a wide variety of languages and character types. However, if used as is on the Web, it can affect page load times, especially on large websites.
To solve this problem, Noto Sans installed in the user’s local environment can be used preferentially by specifying font-family as follows
font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;.This method is especially useful in environments such as Android and Chrome. In these environments, Noto Sans is installed by default, so by using fonts that exist in the local environment, web font downloads can be omitted, greatly reducing page load times.