If you need to take a screenshot of any active window you can use the good ole’ PrtScn button on your keyboard.

The PrtScn button can also provide you with two different types of screenshots as outlined below:

PrtScn button

Pressing the PrtScn button individually will provide you with a full-screen shot, meaning if you have multiple windows visible at once, the screenshot will be identical to what you see on screen. A full print screen also includes the start button, taskbar, and system clock areas.

Alt + PrtScn button

Pressing the Alt + PrtScn button together means you will only get a screenshot of the active window. I generally use this method more often so that I’m only getting an image of the application window I need and it leaves out the additional content such as the taskbar, clock, start menu, etc.

This method also allows you to resize the window you wish to take a screenshot of, which is quite handy. In my example below I have used Alt + Prtscn to take a screenshot of only the Format Cells dialog box in Excel.

To create a screenshot using Windows, follow these steps:

  1. Open your web browser and navigate to a website you want to take a screenshot of, you can even just use this window if you prefer
  2. Make sure the web browser is the current window active (click the mouse anywhere within the window) and is maximised to fill the entire screen
  3. To create a screenshot, press the PrtScn button on your keyboard. Because we are using the PrtScn button individually it will take a full screenshot of the entire computer screen including the taskbar and start button

Note: Your keyboard may use a slight variation of this button name, including Print Scn, Prt Scn, etc

  1. Do not be concerned if it looks like nothing happens, the screenshot will now have been saved to the clipboard of your computer
  2. Now let’s open a program we can paste the screenshot into such as Microsoft Word, Paint, or even a new email message
  3. Now click the Paste button or press Ctrl + V on the keyboard
  4. A screenshot of the web page will now be displayed inside the program window

  1. Alternatively, you could paste the screenshot into a graphics program such as Adobe Photoshop or even Microsoft Paint to be saved in an image file format such as. JPG or PNG.
  2. Repeat the same process, however, use the Alt + PrtScn key combination to see the difference, you will notice it does not include the taskbar or start button.

Create a Screenshot using Microsoft Office

The screenshot process within Microsoft Office is very easy. Ensure you have opened the window you wish to create a screenshot of, in this case, keep your web browser window open.

  1. Open Microsoft Word, Excel, or PowerPoint or even open a new blank email message in Outlook
  2. From within any of the Microsoft Office programs, click the Insert tab and choose the Screenshot button
  3. You will see a drop-down menu appear showing a thumbnail of each window currently active:

  1. Select the thumbnail of your web browser and click it once
  2. A screenshot of your web browser window will automatically be inserted into your document
  3. You can now save the document you have open

Congratulations, you have now created a screenshot using the methods available in Windows and Office. 

Reference: https://www.thetraininglady.com/create-screenshot/