Double-click your new Language entry. Type the correct code for your desired language:

| Language | Code to Type | | :--- | :--- | | English (US) | en_US | | English (UK) | en_GB | | Spanish (Spain) | es_ES | | Spanish (Mexico) | es_MX | | French (France) | fr_FR | | German | de_DE | | Chinese (Simplified) | zh_CN | | Chinese (Traditional) | zh_TW | | Japanese | ja_JP | | Korean | ko_KR | | Italian | it_IT | | Portuguese (Brazil) | pt_BR | | Dutch | nl_NL | | Russian | ru_RU |

In older versions (Nitro Pro 9, 10, 11, 12), you could change the language directly from the "Preferences" or "Review" tab. Starting with Nitro PDF Pro (Version 14 and newer), the company shifted to a cloud-connected, subscription-based model with a ribbon-style interface. Consequently, the language toggle was moved to:

Do not worry. Even if you see a foreign language right now, the following methods work universally.

Changing the UI language (menus) is different from changing the spell-check dictionary. To change spell-check: