clip-path-url()

Codice
<style>
svg {
display: none;
}
.svg-clip {
width: 300px;
height: 200px;
background-image: url('Algoritmo.jpg');
clip-path: url(#clip-shape);
}
</style>
</head>
<body>
<a href="#" onClick="window.history.go(-1);">Home</a>
<svg width="0" height="0">
<defs>
<clipPath id="clip-shape" clipPathUnits="objectBoundingBox">
<circle cx="0.5" cy="0.5" r="0.5"/>
</clipPath>
</defs>
</svg>
<div class="svg-clip"></div>