FileConvert

FileConvert[source->"dest.ext"] converts the contents of source to the format defined by the extension ext and writes the result to the file dest.ext.

• FileConvert[source,"format"] writes the result to the filename defined by source, but with an extension defined by the specified format.
• FileConvert[source->"dest.ext",format1->format2] takes the contents of source to be in the specified format "format1".

Examples

(* Convert an image to a different format *)
FileConvert["photo.png" -> "photo.jpg"]

(* Convert to PDF *)
FileConvert["document.docx", "PDF"]

(* Specify source format explicitly *)
FileConvert["data.csv" -> "data.xlsx", "CSV" -> "XLSX"]

Please visit the official Wolfram Language Reference for more details.