How to get userAgent information in Selenium Web driver?

Last Updated : 11 Sep, 2024

When utilizing Selenium WebDriver for the automation of web tests, it is frequently essential to retrieve the user agent string of a browser. The user agent conveys details regarding the browser and operating system, which can be instrumental in assessing how a web application performs in diverse environments.

This guide will demonstrate how to obtain user agent information in Selenium WebDriver using Java. This method is crucial for ensuring that your application reacts appropriately to various user agents.

Prerequisites

Java Development Kit (JDK) must be installed on your system.
Eclipse IDE or any Java-compatible IDE.
Basic knowledge of Java and Selenium WebDriver.
Selenium WebDriver and Browser Driver installed.

Example to get userAgent information in Selenium Web driver

Java

import org.openqa.selenium.JavascriptExecutor; import org.openqa.selenium.WebDriver; import org.openqa.selenium.chrome.ChromeDriver; import org.openqa.selenium.chrome.ChromeOptions;  public class UserAgentExample {     public static void main(String[] args) {         // Step 1: Set the path for the WebDriver executable         System.setProperty("webdriver.chrome.driver", "path/to/chromedriver");          // Step 2: Initialize ChromeOptions         ChromeOptions options = new ChromeOptions();          // Step 3: Initialize WebDriver with ChromeOptions         WebDriver driver = new ChromeDriver(options);                  try {             // Maximize browser window             driver.manage().window().maximize();              // Launch URL             driver.get("https://www.seleniumhq.org/download/");                          // Get user agent using JavaScript execution             String userAgent = (String) ((JavascriptExecutor) driver).executeScript("return navigator.userAgent");                          // Print user agent             System.out.println("User agent:");             System.out.println(userAgent);         } finally {             // Close browser session             driver.quit();         }     } }

Output

Conclusion

In summary, obtaining the user agent string using Selenium WebDriver is straightforward and crucial for comprehensive web testing. By applying JavaScript execution within your Selenium scripts, you can easily retrieve the user agent and ensure your application functions as expected across different browsers and devices.

This technique enhances your testing capabilities and helps maintain a high standard of quality for your web applications.