Results from tracking 19,223 images across 1,194 instances from the mstdn.social federated timeline.
Then filtering down to the top 1000 instances by active user from instances.social who had posted at least 24 images (1.5x the average).
If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.social/users/AltTextHealthCheck/statuses/116043212772197701 on your instance and quote it. (Note that quoting is not supported in Mastodon.)
RE: https://mastodon.social/@AltTextHealthCheck/116043212772197701
Wow, good job y’all! Especially the folks who post a lot of images!