def _convert_title(title: str) -> str:
    """Converts a title to a filename that can be used."""
    blacklist = ['\\', '/', ':', '*', '?', '"', '<', '>', '|', '\0']

    download_prefix = 'Download '
    title = title[len(download_prefix):]
    title = "".join(c for c in title if c not in blacklist)

    return title