Set Chrome's language using Selenium ChromeDriver

Question

I download ChromeDriver and by defaults the browser language is in English, I need to change it to Spanish, and I have been unable.

public WebDriver getDriver(String locale){   
    System.setProperty("webdriver.chrome.driver", "driver/chromedriver.exe");
    return new ChromeDriver();
}

public void initializeSelenium() throws Exception{
    driver = getDriver("en-us")
}

Solution 1

You can do it by adding Chrome's command line switches "--lang".

Basically, all you need is starting ChromeDriver with an ChromeOption argument --lang=es, see API for details.

The following is a working example of C# code for how to start Chrome in Spanish using Selenium.

ChromeOptions options = new ChromeOptions();
options.addArguments("--lang=es");
ChromeDriver driver = new ChromeDriver(options);

Java code should be pretty much the same (untested). Remember, locale here is in the form language[-country] where language is the 2 letter code from ISO-639.

public WebDriver getDriver(String locale){   
    System.setProperty("webdriver.chrome.driver", "driver/chromedriver.exe");
    ChromeOptions options = new ChromeOptions();
    options.addArguments("--lang=" + locale);
    return new ChromeDriver(options);
}

public void initializeSelenium() throws Exception{
    driver = getDriver("es"); // two letters to represent the locale, or two letters + country
}

Solution 2

For me, --lang didn't work. It seems to set the language of the first opened tab, all others chrome processes are started with --lang=en-US.

What did work is the following:

DesiredCapabilities jsCapabilities = DesiredCapabilities.chrome();
ChromeOptions options = new ChromeOptions();
Map<String, Object> prefs = new HashMap<>();
prefs.put("intl.accept_languages", language);
options.setExperimentalOption("prefs", prefs);
jsCapabilities.setCapability(ChromeOptions.CAPABILITY, options);

Solution 3

I had problems with Chrome using US date format (mm/dd/yyyy) instead of the GB dd/mm/yyyy format (even though I had set these in Chrome). Using:

options.addArguments("--lang=en-GB");

resolved this.

Solution 4

As of now (Jan 2020 - Chrome Version 79.0.3945.130) The C# in the accepted answer does not work.

The simplest approach that I can find to work in C# presently:

ChromeOptions options = new ChromeOptions();
options.AddUserProfilePreference("intl.accept_languages", language);
WebDriver driver = new ChromeDriver(chromeOptions);

Solution 5

I was trying the same and above listed nothing worked for me, at last I tried the below and it worked:

ChromeOptions chromeOptions = new ChromeOptions();

Map<String, Object> prefs = new HashMap<String, Object>();

prefs.put("intl.accept_languages", "ja-jp,ja");

chromeOptions.setExperimentalOption("prefs", prefs);

WebDriver driver = new ChromeDriver(chromeOptions);

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