What determines post thumbnails? (lemmy.world)

submitted 1 month ago by ApollosArrow@lemmy.world to c/voyagerapp@lemmy.world

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Sometimes I will post a link and no thumbnail seems to be pulled from the link. Is this a case by case basis or do I need to do something else?

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[-] squirrel@discuss.tchncs.de 1 points 1 month ago

I noticed thumbnails work better for youtube.com than their short url youtu.be, but I don't know if this is a Voyager issue. I think thumbnails are pulled by your instance.

[-] ApollosArrow@lemmy.world 1 points 1 month ago

That is also what I was reading, that each instance may have its own backend rules on how things are pulled. I worry that may become an issue with cross posting or probably deter people from posting in general if true.