How to Set the size of window using Selenium Java?

To set the size of the browser window in Selenium Java, use the setSize() method of the WebDriver.Window interface in conjunction with the Dimension class.

Step-by-step Guide

Import the Dimension class:

import org.openqa.selenium.Dimension;

Set the window size after initializing the WebDriver:

// Example: Set window size to 1024x768 pixels driver.manage().window().setSize(new Dimension(1024, 768));

This code resizes the current browser window to the specified width (1024) and height (768) in pixels.

Example Code

javaimport org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.Dimension;

public class SetWindowSizeExample {
    public static void main(String[] args) {
        // Initialize the Chrome driver
        WebDriver driver = new ChromeDriver();

        // Set browser window size to 1024x768
        Dimension size = new Dimension(1024, 768);
        driver.manage().window().setSize(size);

        // Proceed with further actions or close the browser
        driver.quit();
    }
}

Key Points

• Syntax:
  javadriver.manage().window().setSize(new Dimension(width, height));
  Replace width and height with the desired values in pixels.
• This method sets the outer window size, not just the viewport.
• Setting window size is useful for responsive testing and simulating different device screen sizes.

You can adjust the width and height to fit your testing needs.