Step 1: Firstly open the Mozilla Firefox app on your system by pressing the Windows key and typing firefox.
Step 2: Then, select Firefox app from the search results by clicking on it as shown in the below screenshot.
Step 3: Press the ALT + T keys together on your keyboard and then hit the S key to open the Settings page on the Firefox app.
Step 4: Click on the General tab on the left side and then scroll down the page and click Choose under the Language section below.
Step 5: In the Webpage Language Settings window, click Select a language to add… dropdown menu at the bottom as shown in the below screenshot.
Step 6: Then, select the language that you want to add to use it as a display language from the dropdown list as shown below.
Step 7: Once done, click Add button to add the language from the list.
Step 8: We need to change the preference of the languages for displaying on the webpages on the firefox browser, in order to make it as a default. So click on the language to select it and click Move Up or Move Down to move it to the top.
Step 9: Once done, click OK.
[mai mult...]