Just looking through the Chrome settings, I get linked to this help article: https://support.google.com/chrome/answer/173424

> You can set Chrome to show all settings and menus in the language you want. This option is only available on Windows and Chromebook computers. > On Mac or Linux? Chrome will automatically display in the default system language for your computer.

Obviously it's different for different OS and browser combos, but the important thing I think is that it's a browser setting and not something that needs to be configured on every site.