You're in luck, I just modified the instance crawler on join-lemmy.org to collect statistics for all Lemmy instances. You can find them in this repo in JSON format. Now we need someone to build a tool that can visualize it. The stats could even be shown directly on join-lemmy.org.

[–] poVoq@slrpnk.net 3 points 4 days ago

Fedidb does that for instances, but not individual communities. Might be easy to add though.

[–] Die4Ever@retrolemmy.com 3 points 4 days ago (1 children)

can you elaborate?

[–] mrdown@lemmy.world 2 points 4 days ago (1 children)

Something like that

[–] Pamasich@kbin.earth 1 points 4 days ago

Mbin (another Reddit based fediverse project) has that exact chart in the magazine (community) panel.

[–] CombatWombatEsq@lemmy.world 1 points 4 days ago

Most stats are at the instance level, rather than the community level, because indecipherable fediverse technobabble. Here’s lemmy, piefed, and mbin

[–] Skavau@piefed.social 1 points 4 days ago

Doesn't Mbin measure this for communities you moderate?