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Cheerleader Revelations [meta: actual gif => giphy.com]
(media.giphy.com)
A Community for people to create posts with GIFs, MP4s or WEBPs - anything that's animated and reasonably short.
Images can be often be hosted directly on Lemmy, or on external sites such as https://imgur.com or https://catbox.moe.
Thunder: thumbnail: yes, loads in post: yes, loops: yes
Thanks. I hadn't heard of Thunder. But I've downloaded it now, and will use it for future testing.