Run results for: Measure texts - OffscreenCanvas vs Canvas

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 137

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Canvas

586K/s

OffscreenCanvas

144K/s

View exact numbers

Test name	Executions per second
✓ Canvas	586,327 Ops/sec
OffscreenCanvas	143,648 Ops/sec

Script Preparation code:

var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
context.font = 'bold 48px serif';

var offscreenCanvas = new OffscreenCanvas(0, 0);
var offscreenContext = offscreenCanvas.getContext('2d');
offscreenContext.font = 'bold 48px serif';

Tests:

Canvas
context.measureText("TESTM").width
OffscreenCanvas
offscreenContext.measureText("TESTM").width