Picture shown by Google search results

When I search for my company name Tramfabriek on Google, I’m number 1 on the list (yoohoo!). That’s as desired, but the picture is just a random picture from the home page. How can I tell the Google-bot what picture to show in the search results?

I see this:

What picture do you see?

Only on my phone, not on the Mac.

It is a picture of featured item on my website (the LED screen at the right on the site).

I’m not seeing any image on the phone either.

The only thing that comes to mind is Google might be using the opengraph image.

You can try setting that via Sparkle’s “social sharing” features: