Run results for: HTMLImageElement vs HTMLCanvasElement vs ImageBitmap

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

HTMLCanvasElement

11.5M/s

HTMLImageElement

11.4M/s

ImageBitmap

11.3M/s

View exact numbers

Test name	Executions per second
✓ HTMLCanvasElement	11,468,736 Ops/sec
HTMLImageElement	11,364,194 Ops/sec
ImageBitmap	11,259,464 Ops/sec

Script Preparation code:

var
natrualWidth = 0,
naturalHeight = 0,

eleImg = document.createElement("img"),
cvsImg = document.createElement("canvas"),
bmpImg = null,

canvasEleImg = document.createElement("canvas"),
canvasCvsImg = document.createElement("canvas"),
canvasBmpImg = document.createElement("canvas"),

ctxEleImg = canvasEleImg.getContext("2d"),
ctxCvsImg = canvasCvsImg.getContext("2d"),
ctxBmpImg = canvasBmpImg.getContext("2d"),

doneLoading = false;

canvasEleImg.width = canvasBmpImg.width = canvasCvsImg.width = 640;
canvasEleImg.height = canvasBmpImg.height = canvasCvsImg.height = 480;

eleImg.addEventListener("load", function()
{
	cvsImg.width = naturalWidth = eleImg.naturalWidth;
	cvsImg.height = naturalHeight = eleImg.naturalHeight;
	cvsImg.getContext("2d").drawImage(eleImg, 0, 0, natrualWidth, naturalHeight, 0, 0, natrualWidth, naturalHeight);

	Promise.all([
		createImageBitmap(img)
	]).then(function(images)
	{
		imageBitmap = images[0];

		doneLoading = true;
	}, false);
});
eleImg.src = "https://media.discordapp.net/attachments/447410261289205781/574359442913492992/unknown.png";

Tests:

HTMLImageElement
if (doneLoading) ctxEleImg.drawImage(eleImg, 0, 0, natrualWidth, naturalHeight, 0, 0, natrualWidth, naturalHeight);
HTMLCanvasElement
if (doneLoading) ctxCvsImg.drawImage(cvsImg, 0, 0, natrualWidth, naturalHeight, 0, 0, natrualWidth, naturalHeight);
ImageBitmap
if (doneLoading) ctxBmpImg.drawImage(bmpImg, 0, 0, natrualWidth, naturalHeight, 0, 0, natrualWidth, naturalHeight);

Run results for: HTMLImageElement vs HTMLCanvasElement vs ImageBitmap

CanvasRenderingContext2d::drawImage with HTMLImageElement vs HTMLCanvasElement vs ImageBitmap

HTMLImageElement

HTMLCanvasElement

ImageBitmap