For example, I have a moving gradient similar to the one on https://stripe.com, are there any tool(s) like steams wallpaper engine that could convert a canvas to a wallpaper, does the technology exist or am I wasting my time?
Add a div on top with your text
.example {
position: absolute;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
}
<canvas class="example" style="z-index:0;"></canvas>
<div class="example" style="z-index:1;">Example text</div>