.pkp_site_name .is_img img {
    display: inline-block;
    max-height: 400px;
    max-width: 100%;
    width: auto;
    height: auto;
}
.pkp_brand_footer{
    display: none;
}
<span>
    <img src="../templates/images/icons/icon-graph.png">
    Abstract views:
    {$article->getviews()} times
    
    <img src="../templates/images/icons/icon-pdf.png">
    Downloaded:
    {$article->getviews()} times
</span>