Run results for: OnScrenn vs OffScreen canvas measureText performance

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Browser: Chrome 140

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

OffscreenCanvas

4.5M/s

Canvas

3.5M/s

View exact numbers

Test name	Executions per second
✓ OffscreenCanvas	4,488,836 Ops/sec
Canvas	3,508,650 Ops/sec

HTML Preparation code:

<div id="wrapper"></div>

Script Preparation code:

var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
document.getElementById('wrapper').append(canvas);

var offscreenCanvas = document.createElement('canvas');
var offscreenContext = offscreenCanvas.getContext('2d');

Tests:

Canvas
context.measureText('m');
OffscreenCanvas
offscreenContext.measureText('m');

Run results for: OnScrenn vs OffScreen canvas measureText performance

DomCanvas vs OffscreenCanvas

Canvas

OffscreenCanvas