I am in the process of applying for Spanish student visa, and I need it "legalized with the Apostille of the Hague Convention by the Department of State in Washington DC."
I have already received the PDF of the FBI background check. According to some guides, I just need to send "the FBI background check results (the printout of the PDF), Form DS-4194, payment, and return mailing envelope" to the Office of Authentication (source). However, the state department website says the document must be notarized and certified before sending in. (source)
So should I get the background check notarized and certified, or should I just send in the PDF printout?