FileFormatQ

FileFormatQ[source,"fmt"] gives True if the file corresponding to source might be imported as format "fmt" and gives False otherwise.

FileFormatQ[source,{fmt1,fmt2,…}] gives True if source might be imported as one of "fmti".

Examples

(* Check if a file is a PNG *)
FileFormatQ["image.png", "PNG"]

(* Check against multiple formats *)
FileFormatQ["data.txt", {"CSV", "TSV", "Text"}]

(* Verify file type *)
FileFormatQ["document.pdf", "PDF"]

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