TL;DR: Our new Terms of Service will go into effect on May 15, 2023. We will be focused on removing old, unused, and inactive content that is not tied to a user account from our platform as well as nudity, pornography, & sexually explicit content. You will need to download/save any images that you wish to save if they no longer adhere to these Terms. Most notably, this would include explicit/pornographic content.

Starting from May 15th Imgur will not only ban porn from being posted, but will also retroactively remove porn that has been uploaded in the past, as well as all uploads by users not logged into an Imgur account. The Verge and Vice News have both written articles about this, and Imgur's own explanation is here.

Alternatives

Redgifs - They have put out a statement affirming their commitment to NSFW content.

Erome - Allows videos with sound.

Catbox - Allows files up to 200MB.

Other discussions

r/DataHoarder: https://www.reddit.com/r/DataHoarder/comments/12sbch3/imgur_is_updating_their_tos_on_may_15_2023_all/

r/Hentai: https://www.reddit.com/r/hentai/comments/12ts8uq/attention_on_may_15th_imgur_will_remove_all_nsfw/

r/AnriOkita: https://www.reddit.com/r/anriokita/comments/12v8tw0/announcement_impact_of_the_imgur_nsfw_ban_purge/