Copy (Image) from Google PageSpeed
(thanks, and note to toggle between mobile and desktop tabs perhaps)
and Paste via macOS Alt-PrtScr Below (for Data URI as well)
or to an Image Editor that can Crop out Extraneous White Parts
or Resize Image and Save
(ready for Border Image or Background Image or just Image purposes)

Emoji Image Creator
(Paste Below)
Data URI
Copied image src (that you can Email 📧):