Is there a Chrome Extension which can be used to quickly switch between two locales (e.g. English and German) quickly? Some websites detect the user's language using the Accept-Languages
HTTP-header while not having any UI to configure the desired language. In that case the only way I know of to change the language is to change the mentioned HTTP-header.
Actually, any quick way to switch locales will do. It does not have to be an extension.
chrome://chrome/settings/languages
and then you just need to Drag and Drop the language to make it default.