To get started, open any web page inside Google Chrome and choose Settings -> Tools -> Developer Tools. Alternatively, press F12 on Windows or Cmd+Opt+I on a Mac to directly open the Chrome Dev Tools window.
Next, toggle the Device Toolbar button so that it turns blue. Now select any mobile device from the built-in list of device presets. Set the zoom to 100% and click the Rotate icon to change the orientation (default is portrait mode).
The stage is set. Click the 3-dot menu in the right and enable device frame. Next, choose Capture Screenshot from the same menu to save a device screenshot in PNG format.