Swift -> Get image/file extension through url

let ext = url.pathExtension
var contentType:String = ""

if(ext?.lowercased() == "pdf") {
    contentType = "pdf"
} else if(ext?.lowercased() == "jpeg" || ext?.lowercased() == "jpg") {
    contentType = "jpeg"
} else if(ext?.lowercased() == "png") {
    contentType = "png"
}

You can find any extension using “ext” in above example.

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