Run results for: setFont measureText OffscreenCanvas vs Canvas

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Offscreen textBaseline

55.4M/s

Canvas textBaseline

55.0M/s

Canvas textAlign

54.0M/s

Offscreen textAlign

52.6M/s

Canvas font

3.7M/s

Offscreen

1.6M/s

Canvas

1.5M/s

Offscreen font

374K/s

View exact numbers

Test name	Executions per second
✓ Offscreen textBaseline	55,357,144 Ops/sec
Canvas textBaseline	54,972,936 Ops/sec
Canvas textAlign	53,973,216 Ops/sec
Offscreen textAlign	52,578,424 Ops/sec
Canvas font	3,737,799 Ops/sec
Offscreen	1,569,178 Ops/sec
Canvas	1,507,903 Ops/sec
Offscreen font	373,704 Ops/sec

Script Preparation code:

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

Tests:

Canvas
context.measureText('M');
Offscreen
offscreenContext.measureText('M');
Canvas font
context.font = 'bold 48px serif';
Offscreen font
offscreenContext.font = 'bold 48px serif';
Canvas textBaseline
context.textBaseline = "hanging";
Offscreen textBaseline
offscreenContext.textBaseline = "hanging";
Canvas textAlign
context.textAlign = "center";
Offscreen textAlign
offscreenContext.textAlign = "center";