Set the locale field in your session request to display the checkout UI in the customer's language. The locale format follows the pattern: ISO 639 language code, an underscore, and an ISO 3166 region code (for example, en_US).

Locale List

Arabic

This table lists the supported Arabic locales:

Chinese

This table lists the supported Chinese locales:

Dutch

This table lists the supported Dutch locale:

Eastern European

This table lists the supported Eastern European locales:

English

This table lists the supported English locales:

French

This table lists the supported French locales:

German

This table lists the supported German locales:

Greek

This table lists the supported Greek locale:

Hebrew

This table lists the supported Hebrew locale:

Italian

This table lists the supported Italian locale:

Nordic

This table lists the supported Nordic locales:

Portuguese

This table lists the supported Portuguese locale:

South and Southeast Asian

This table lists the supported South and Southeast Asian locales:

Spanish

This table lists the supported Spanish locales:

Turkish

This table lists the supported Turkish locale:

Urdu

This table lists the supported Urdu locale:

Right-to-Left Rendering

The three Arabic locales (ar_AE, ar_JO, ar_QA) receive full right-to-left (RTL) UI support: field order, text alignment, and layout mirror the RTL reading direction.