What's a FOSS alternative to Imgur that doesn't require me to sign up?

there’s this:

its free, and it’s licensed under the MIT license. it’s a bit bare-bones, but it works!

this is good
- There are many like it, but this one is mine

you mean like running your own? nextcloud

Not floss, but popular here: https://catbox.moe/
No, not self-hosted. Free and Open Source.
- What's the value in an open sourced centralized service? Aren't you just looking for a free service?
- you realize thats not likely to be a thing due to hosting costing money. file hosting in particular is a bigger bill each month while realizing only minimal utilization increase. if its to be 100% free its going to collapse eventually.
  search for a subscription or ad-supported system you like. You aren't looking for free software (what OSS is) you are looking for free service (increasingly rare on the internet)

https://picsur.org/upload
Bummer that it doesn't support video.
- Seconded. I still think a FOSS alternative that allows embedding videos within Lemmy and Mastodon is a huge step forward.
  I’d host my own instance for the few things myself and a few friends post and others could do the same. Then of course there would be larger more professional instances that people would host as well.

You can refer here and check if any meet your needs. Some of the top ones are obviously not the ones you require so do scroll and try out the others.

https://alternativeto.net/software/imgur/?license=opensource

I don’t see this as a viable concept, as much as I’d like it to be.

I damn sure don’t want to be the sysadmin responsible for the content in that wretched hive of scum and villainy, not with the minefield that is s230 if you’re not a giant platform, or without running uploads thru corp photo identification products.

The legal structure is such that running it would be perilous.

some few instances of lutim (https://github.com/ldidry/lutim) remaining which I'm aware of

https://www.chatons.org/search/by-service?service_type_target_id=All&field_alternatives_aux_services_target_id=All&field_software_target_id=234&field_is_shared_value=All&title=