Use ?locale=LOCALE_CODE
parameter like so :-

Code |
Locale |
Progress |
|
Arabic |
|
|
English |
|
|
Spanish |
|
|
Persian |
|
|
French |
|
|
Indonesian |
|
|
Japanese |
|
|
Korean |
|
|
Malay |
|
|
Portuguese |
|
|
Portuguese (Brazil) |
|
|
Sundanese |
Want to add new translations? Consider reading the contribution guidelines :D