On a landing page for a Pricefx instance, you can use these parameters in links to different language versions:

• locale – Sets the format of dates and numbers.

• uiLanguage – Sets the language of the application. If not specified, the default language from User Settings or the language setting of your web browser will be applied.

As a value for both parameters, use the ISO language code.

For example, the last link on the screenshot below looks like this: https://test.pricefx.eu/classic/priceFxWeb.html?locale=de&uiLanguage=en#loginPage

It keeps the UI in English, while dates and numbers are formatted according to German.