To convert PDF Documents to Word format.

async function main() {
  const wordOutputOptions = new PDFNet.Convert.WordOutputOptions();

  // Optionally convert only the first page
  wordOutputOptions.setPages(1, 1);

  // Requires the Structured Output module
  await PDFNet.Convert.fileToWord(filename, output_filename, wordOutputOptions);
}
PDFNet.runWithCleanup(main);

To convert PDF Documents to Excel format.

async function main() {
  const excelOutputOptions = new PDFNet.Convert.ExcelOutputOptions();

  // Optionally convert only the first page
  excelOutputOptions.setPages(1, 1);

  // Requires the Structured Output module
  await PDFNet.Convert.fileToExcel(filename, output_filename, excelOutputOptions);
}
PDFNet.runWithCleanup(main);

To convert PDF Documents to PowerPoint format.

async function main() {
  const powerPointOutputOptions = new PDFNet.Convert.PowerPointOutputOptions();

  // Optionally convert only the first page
  powerPointOutputOptions.setPages(1, 1);

  // Requires the Structured Output module
  await PDFNet.Convert.fileToPowerPoint(filename, output_filename, powerPointOutputOptions);
}
PDFNet.runWithCleanup(main);

Convert PDF to Office
Full sample code which shows how to convert generic PDF documents to Word, Excel, PowerPoint format