Lang packs can be manually downloaded from Language packs for Moodle 4.2. Language packs are a work-in-progress, since new language strings are added for new features in each new version of Moodle.

Multiple language packs may be uninstalled, once selected, by clicking the 'Uninstall selected language packs' button. Installing many (20+) language packs has almost 0 impact on Moodle performance. Multiple language packs may be selected for install by holding down the Apple or Ctrl key whilst clicking on the language packs. New in 3.11: A new search box allows administrators to quickly locate a language pack for installation.

Simply select the languages you require from the list of available language packs and click on the 'Install selected language pack' button. Over 100 language packs are available for an administrator to install on your Moodle site in 'Language packs' in the Site administration.