Changing the user agent using selenium webdriver in Java

DesiredCapabilities would help you to change user agent.

You can achieve this by calling these methods:

• setBrowserName(java.lang.String browserName)
• setPlatform(Platform platform)
• setVersion(java.lang.String version)

Or

• static DesiredCapabilities chrome()
• static DesiredCapabilities firefox()
• static DesiredCapabilities iphone()
• ...

More here.

I believe this solution is the desired answer to the question. I tested it and it worked for me. Happy coding!

FirefoxOptions options = new FirefoxOptions();
String userAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36 OPR/60.0.3255.170";
options.addPreference("general.useragent.override",userAgent);

WebDriver webDriver = new FirefoxDriver(options);
webDriver.get("http://whatsmyuseragent.org");

I needed to do it for Chrome, and needed to set a specific string (not fitting as platform, browser or version) for Googlebot.

    // import org.openqa.selenium.chrome.ChromeOptions;

    ChromeOptions options = new ChromeOptions();
    options.addArguments("user-agent=\"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)\"");
    new ChromeDriver(options);