parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
data = Base.decode64!(parsed["data"], ignore: :whitespace)
hash = String.downcase(Base.encode16(:crypto.hash(:sha256, data)))
parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
data = Base.decode64!(parsed["data"], ignore: :whitespace)
hash = String.downcase(Base.encode16(:crypto.hash(:sha256, data)))