Canva is available in a diverse range of locales. You can raise a request to have your integration's product catalog and templates translated into any of these locale's languages.
For a complete list of supported languages, refer to Locales.
Partners can only request the product catalog and templates to be translated to specific languages. The display language of the product catalog and the Canva editor depends on the user's browser language settings. Partners can ignore the browser settings and set a display language with the opts.locale parameter in the initialize method.