JSFiddle - React, Tailwind, and code Playground

HTML

<canvas id="myCanvas" width="200" height="100"></canvas>

JavaScript

var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.fillStyle="#FF0000";
ctx.fillRect(0,0,150,75);

var url = c.toDataURL('image/jpeg', 1);

console.dir(url);