def piuma_url(
    piuma_host, image_url, width=0, height=0,
    quality=100, adaptive_quality=False, convert_to="",
):
    piuma_host = piuma_host.rstrip('/')
    piuma_url = '{0}/{1}/{2}'.format(
        piuma_host,
        '{0}_{1}_{2}{3}{4}'.format(
            width, height, quality,
            "a" if adaptive_quality else "",
            ":" + convert_to if convert_to else ""
        ),
        image_url
    )
    return piuma_url
