windows – What is this site

How to use this site? It happened to me to come across a site in my story in which my daughter uses my phone, it only showed and, when I entered, it was replaced by a black screen and an icon in the middle, which has allowed me to add / top_j. html in the end, he then led me to the second page. What is this site and how can I use it? I keep trying to add a photo, but for some reason she does not let me