To convert PDF Documents to Word format.

$wordOutputOptions = Convert::WordOutputOptions.new()

# Optionally convert only the first page
$wordOutputOptions.SetPages(1, 1);

# Requires the Structured Output module
Convert.toWord(filename, output_filename, $wordOutputOptions)

To convert PDF Documents to Excel format.

$excelOutputOptions = Convert::ExcelOutputOptions.new()

# Optionally convert only the first page
$excelOutputOptions.SetPages(1, 1);

# Requires the Structured Output module
Convert.toExcel(filename, output_filename, $excelOutputOptions)

To convert PDF Documents to PowerPoint format.

$powerPointOutputOptions = Convert::PowerPointOutputOptions.new()

# Optionally convert only the first page
$powerPointOutputOptions.SetPages(1, 1);

# Requires the Structured Output module
Convert.toPowerPoint(filename, output_filename, $powerPointOutputOptions)

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