How do I streamread a jpeg file which have been converted to text?

I did not encode it at all, I simply did as such
dim jpgfile as string = "D:\Content\Kryptering testmapp/fatman.jpg"
If System.IO.File.Exists(jpgfile) = True Then
System.IO.File.Copy(jpgfile, (insert new path and filename.txt))
MsgBox("file copied")
End If
now i have a copy of the jpg file in .txt format.
what i want to do with this is to get that exact strange text in a string like this
dim mystring as string
Using reader As StreamReader = New StreamReader(newstring)
mystring = reader.ReadToEnd
End Using
end sub
output of the string does not match the content of the txtfile, instead it contains a bunch of these :"�"
i want my string output to be "ùé :UÔÀï~˺‹á
rïºH9Šý lW`ÇöûhÝ ˜ÛÀU²ÝRù(5n" just as it is, not decoded or anything just in that plain text. Is it possible?