We’re deprecating www.derpibooru.org and www.trixiebooru.org (but not the top-level derpibooru.org and trixiebooru.org). These subdomains will start redirecting to their non-www counterparts starting March 1, 2024.
The reason for this deprecation is rather simple, we don’t want to keep too many subdomains around due to caching issues, traffic separation and SEO issues. We kept www. subdomains around because in certain countries they used to bypass country-specific bans/blocks of Derpibooru. However, we’ve learned that the countries in question recently started being able to access the normal site (without www.) without a VPN or a proxy, so there’s literally no reason to keep them around anymore.
If you’re using the www. subdomains for any reason, please make sure to replace them with the main domain like so: www.derpibooru.org/images/0 -> derpibooru.org/images/0
I understand that some people use the www. subdomain for the purposes of maintaining multiple accounts. For these users, I suggest simply using trixiebooru.org instead. In the future, we’ll implement proper multi-account support though.