Компресирайте DOC в C++ SDK

using namespace aspose::words::cloud;

auto config = std::make_shared<ApiConfiguration>(L"####-####-####-####-####",
   L"##################");
auto wordsApi = std::make_shared<WordsApi>(config);

auto requestDocument = std::shared_ptr<std::istream>(
   new std::ifstream(std::filesystem::path(L"Input.doc"), std::istream::binary));
auto requestCompressOptions = std::make_shared<aspose::words::cloud::models::CompressOptions>();
requestCompressOptions->setImagesQuality(std::make_shared<int32_t>(75));
requestCompressOptions->setImagesReduceSizeFactor(std::make_shared<int32_t>(1));
std::shared_ptr<requests::CompressDocumentOnlineRequest> compressDocumentRequest(
    new requests::CompressDocumentOnlineRequest(
        requestDocument, requestCompressOptions
    )
);
auto compressDocument = wordsApi->compressDocumentOnline(compressDocumentRequest);

auto requestDocument = std::shared_ptr<std::istream>(
   compressDocument->document->values.begin, std::istream::binary));
std::shared_ptr<requests::ConvertDocumentRequest> convertDocument(
    new requests::ConvertDocumentRequest(
        requestDocument, std::make_shared<std::wstring>(L"doc")
    )
);
wordsApi->convertDocument(convertDocument);