ByteArrayFormatQ

ByteArrayFormatQ[ba, "fmt"] gives True if the ByteArray object ba might be imported as format "fmt" and gives False otherwise.

ByteArrayFormatQ[ba, {fmt1, fmt2, ...}] gives True if ba might be imported as one of "fmti".

Examples

Check byte array format:

ByteArrayFormatQ[ByteArray[{137, 80, 78, 71}], "PNG"]
(* True *)

Please visit the official Wolfram Language Reference for more details.