For your specific use case, Tumblr is almost certainly the right call. It's a more capable platform than I think people sometimes see, even for long-form text,

For your specific use case, Tumblr is almost certainly the right call. It's a more capable platform than I think people sometimes see, even for long-form text, but "easily sharing photos and videos of things you like for no particular reason" could pretty much be Tumblr's corporate mission statement.