We have seen how to change Firefox display language, similarly Opera browser also provides option for changing the display language. This can be done using the Preferences menu.
Click menu drop down and navigate to settings menu.
Select Preferences from the list of available menus. This would display the following preferences window.
In the General tab, navigate to Select your preferred language for Opera and webpage. Using the Language drop down box, you can change the display language of Opera. After selecting the required display language, click OK to save the changes.