Mobile phones have definitely revolutionised the way we live – we can do almost everything with a mobile phone! Even when creating a presentation deck, screenshots of websites in mobile view are commonly used. In this tutorial, I’ll show you how to create a mobile-sized image of a website (e.g., Linkedin) using common functions in PowerPoint. But first, download a free, transparent background image of an iPhone or Android device frame from PNGTree.
1. Open a blank presentation.
2. Insert the blank iPhone frame. This image contains unwanted white space that we can trim it off using the Crop function.

3. On the Picture Format tab, in the Size group, click Crop and select Crop.

4. Click and drag the crop handles to trim off the white space as much as possible. It looks something like this:

5. Resize the image to the size that you want. I’ve resized it to 15cm x 7.74cm.

6. Go to www.linkedin.com using Google Chrome web browser. On the top-right corner of the browser, click the three-dot menu icon and select More tools and Developer tools.

7. You’re now in a device view mode. You may see different view from the one below because that was my last chosen device view (i.e., iPhone XR).

8. To change the type of mobile device, select from the available device list. In this example, I will continue to use iPhone XR.

9. On the top-right corner of the Developer tools’ window, click the three-dot menu icon and select Run command (or, use the keyboard shortcuts Ctrl + Shift + P).

10. Enter the keyword “screenshot” in the Run command field. Select Capture screenshot.

11. In the Save As dialog box, choose a folder path to download the screenshot and click Save.

12. Go back to your presentation deck. On the Insert tab, in the Images group, click Pictures and select This Device.

13. Select the file that you’ve saved in Step 11. Click Insert.

14. Resize the Linkedin image so that it is a little smaller than the iPhone frame. Something like this:

15. Similarly, crop the Linkedin image at the bottom so that it fits within the device frame. However, note how the corners at the bottom still exceed the frame by a tiny bit. Don’t worry, we’ll “fix” this in the next step!

16. Right-click the Linkedin image, and select Send to Back.

17. The Linkedin image is now behind the iPhone frame. Isn’t this pretty!

If you want to edit the Linkedin text to create a customised mock-up screen, check out this post, at the paragraph after Step 5.
iPhone attribution: Designed By RajneeshRawat from PNG Tree