Only by following your link will people see your gallery view. The view itself won’t embed on Facebook, and the Airtable devs are the ones who decide what preview image will be shown when a view link is shared. If you want a thumbnail view of your table to appear with the link, there may be a way to tweak link the setup on Facebook, but I’ve never done it myself, so I can’t offer specific guidance on how to do it, and I don’t know anyone off the top of my head who does know how to do it. I’m not really much help, but that’s the best I know.