// This code example demonstrates how to convert Excel to PDF without using cloud storage.
// Initialize an instance of the API
$apiInstance = new GroupDocs\Conversion\ConvertApi($configuration);

// Input file path
$filePath = "C:\\Files\\Conversion\\sample.xlsx";

// Prepare convert document direct request
$request = new GroupDocs\Conversion\Model\Requests\ConvertDocumentDirectRequest("pdf", $filePath);

// Convert
$result = $apiInstance->convertDocumentDirect($request);

// Done
echo "Document converted: " . $result->getSize();