What I'm asking is if there are any browser extensions or an app that will just automatically block any community you encounter from a particular instance.
Im kind of tired of seeing all the porn on all and blocking communities 1 by 1 but I don't want to turn off nsfw.
(Also as a side question, is this the community to ask lemmy related questions? I guess it will probably be oversaturated with this kind of post so I ask for future reference, I thought about asklemmy but that is more about open ended questions.)
I came here ready to ask the same question for the same reason.
Seems like a really good idea for a future version of lemmy - being able to block almost all porn (on this account at least) by blocking a single instance would be so convenient.
Yep, it would give much more control to the user, also it's a feature already present in mastodon (called block domain over there) so it's not a foreign idea to the fediverse.
Just log in on a normal web browser (not wefwef), search for the community you want to block and enter that page, there should be a block community button there. After blocking they will not show up in your feed anymore (I’ve used it to successfully block all the shitposting communities, so much better)
you can setup your own instance and block federation with instances that way. then use a tool like this to auto-subscribe to all the top communities. https://github.com/Fmstrat/lcs.
I've just done that myself for different reasons but this is a discovered side effect.
On Kbin, you just go to https://kbin.social/d/lemmy.world (or whatever instance you want to block) and you can block it. You can also follow an instance it if you want to see every single post from every single community on an instance for some reason.
You could use a userscript extension like Tampermonkey and install this script to be able to block posts and comments from specific instances: https://lemmy.dbzer0.com/post/141704