In today's modern world of information and technology, the World Wide Web has become an indispensable part of life. The ability to view more than one web page on the same monitor lets you compare two sets of data. For many online applications, having a second web page open side by side on the same monitor helps increase your productivity.
Open your preferred web browser and enter a web address in the address bar. Press the "Enter" key to "surf" to the first desired web site. Some older versions of web browsers also have a Go button next to the web address in the toolbar at the top of the browser.
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Click the "File" menu and select "New Window." Make sure you select the "New Window" option, and not "New Tab." Some web browsers have an icon in the toolbar that also brings up a new window. When the new web browser window appears, enter a different web address in the address bar. Switch between windows by clicking the respective icons on the taskbar, generally at the bottom of your screen. Windows and tabs are often confused, but browser tabs do not allow you to view two web pages at the same time.
Click on the button with the small square in the top right of one of the web browser windows. Move the mouse over the edge of the window until it looks like two arrows pointing in opposite directions. Click on it and drag the edge to the middle of the screen. Repeat on the other window, and then click on the top and drag it to the other side of the screen so the windows are side by side.
You can also open new windows by right-clicking on a tab in your current window and selecting the "Open in New Window" option. As of December 2009, the most popular web browsers are Internet Explorer, Firefox or Mozilla, Google Chrome, Safari and Opera. Look at the Alternative Web Browsers in Resources for a more comprehensive list of options. You can also open multiple tabs in your browser from the "File" menu if you select "New Tab." This allows you to have more than one web page open, though you cannot adjust them to see them at the same time.
Many mobile web browsers for cell phones or PDAs do not allow you to have multiple windows open at the same time.