Google's OAuth console requires URIs to "end with a public top-level domain" and "use a domain that is a valid top private domain." GitHub
github.io is on the Public Suffix List, meaning Google treats it like a TLD you don't own, so it rejects it. Same would happen with js.org
SO CANNOT REQUEST FOR A FREE DOMAIN
Google's OAuth console requires URIs to "end with a public top-level domain" and "use a domain that is a valid top private domain." GitHub
github.io is on the Public Suffix List, meaning Google treats it like a TLD you don't own, so it rejects it. Same would happen with js.org
SO CANNOT REQUEST FOR A FREE DOMAIN