Internet, Networking, & Security > Browsers How to Change the Default Languages in Mozilla Firefox Tell Firefox which language you prefer when viewing web pages By Scott Orgera Scott Orgera Facebook Twitter Writer Scott Orgera is a former Lifewire writer covering tech since 2007. He has 25+ years' experience as a programmer and QA leader, and holds several Microsoft certifications including MCSE, MCP+I, and MOUS. He is also A+ certified. lifewire's editorial guidelines Updated on February 28, 2021 Tweet Share Email Tweet Share Email Browsers Firefox Chrome Safari Microsoft What to Know Menu > Options > General > Language and Appearance > Language > Set Alternatives > Select a language to add > and choose.Shortcut to preferences menu: Type about:preferences in the search bar.Press OK to confirm your language choice. This article describes how to change the default language in Mozilla Firefox to any of the more than 240 the browser supports. How to Specify Preferred Languages in Firefox Setting and modifying Firefox's list of preferred languages can be done quickly. See the steps below: In Firefox, select the menu icon (the three horizontal bars) in the upper-right corner. You can also type about:preferences into the Firefox address bar. Select Options. In General preferences, scroll down to the Language and Appearance section. Under the Language subheading, you should see your default language. Select Set Alternatives. Select the Select a language to add drop-down menu. Scroll through the alphabetical language list and select the language of your choice. To move it into the active list, select Add. When you're satisfied with your changes, select OK to return to the Firefox preferences. Once there, close the tab or enter a URL to continue your browsing session. Your new language is added to the preferences list. By default, the new language goes at the top of the list. To change its order, use the Move Up and Move Down buttons accordingly. To remove a specific language from the preferred list, select it, and select Remove. Firefox displays the first language as your default while browsing. Alternate languages are displayed, if necessary, in the order they appear on this list. Not all web pages are available in all languages. Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit