Run results for: OffscreenCanvas measureText Japanese

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.4.1

Device Platform: Mobile

Date tested: one year ago

Canvas

306K/s

OffscreenCanvas

305K/s

View exact numbers

Test name	Executions per second
✓ Canvas	306,064 Ops/sec
OffscreenCanvas	304,617 Ops/sec

Script Preparation code:

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

Tests:

Canvas
context.measureText('Hello, World! あいうえお');
OffscreenCanvas
offscreenContext.measureText('Hello, World! あいうえお');

Run results for: OffscreenCanvas measureText Japanese

DomCanvas vs OffscreenCanvas

Canvas

OffscreenCanvas