Get your own website Result Size: 625 x 565
x
 
<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>
<script>
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
var imgData = ctx.createImageData(100, 100);
alert("Width of imgData is: " + imgData.width);
var i;
for (i = 0; i < imgData.data.length; i += 4) {
  imgData.data[i+0] = 255;
  imgData.data[i+1] = 0;
  imgData.data[i+2] = 0;
  imgData.data[i+3] = 255;
}
  
ctx.putImageData(imgData, 10, 10);
</script>
</body>
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryhtml5_canvas_imagedata_width by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 18:16:50 GMT -->
</html>