Due to lack of resources to maintain the Unicorn project, W3C stopped providing this on-line service as of 31 March 2023. See 2023-02-15 W3C Homepage news. The source code is available on GitHub under the W3C Software license. Anyone can run it for themselves, fork it. Copyright © 2023 World Wide Web Consortium. W3C® liability, trademark and permissive license rules apply.
