There are two ways to do it, one with ClipPath 100% with CSS, and another using SVG, but SVG can be straight into HTML as I did in the example. If you want you can use base64 tb, but I think it's not worth it ...
Example with clip-path
(site for you to make your path, mine was kind of rude but just an example. #
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
background-image: linear-gradient(to top, #30cfd0 0%, #330867 100%);
}
body {
background-image: linear-gradient(to top, #30cfd0 0%, #330867 100%);
}
.footer {
width: 100%;
height: 100vh;
position: absolute;
bottom: 0;
left: 0;
-webkit-clip-path: polygon(41% 54%, 53% 64%, 66% 60%, 89% 59%, 100% 73%, 100% 100%, 0 100%, 0% 70%, 10% 58%, 24% 51%);
clip-path: polygon(41% 54%, 53% 64%, 66% 60%, 89% 59%, 100% 73%, 100% 100%, 0 100%, 0% 70%, 10% 58%, 24% 51%);
background-color: #ffffff;
}
<div class="footer"></div>
Example with SVG.
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
background-image: linear-gradient(to top, #30cfd0 0%, #330867 100%);
}
body {
background-image: linear-gradient(to top, #30cfd0 0%, #330867 100%);
}
.footer {
width: 100%;
height:50vh;
position: absolute;
bottom: 0;
left: 0;
fill: #ffffff;
}
<div class="footer">
<svg viewBox="0 0 869 344" xmlns="http://www.w3.org/2000/svg">
<path d="M 272 0.0130308C 164.8 1.21303 46 85.1797 0 127.013L 0 342.013L 867 342.013L 867 6.51303C 779 0.013031 684.5 127.013 616.5 127.013C 548.5 127.013 406 -1.48697 272 0.0130308Z"/>
</svg>
</div>
SVG tb was not perfect, but it's just for example! Site for you to do your SVG figma.com