## merge_streams(output_stream, input_streams, save_format) {#bytesio_bytesiolist_saveformat} Merges the given input documents into a single output document using specified input output streams and......output format is an image (BMP, EMF, EPS, GIF, JPEG, PNG, or WebP)...output format is an image (BMP, EMF, EPS, GIF, JPEG, PNG, or WebP)...