Run results for: PutImageData vs DrawImage vs fillRect

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:6.8) Goanna/20260121 PaleMoon/34.0.1

Browser: Pale Moon (Firefox Variant) 34

Operating system: Windows

Device Platform: Desktop

Date tested: 6 months ago

DrawImage half master into di canvas

651K/s

DrawImage whole master into di canvas

622K/s

rect

289K/s

PutImageData half master into pid canvas

2K/s

PutImageData whole master into pid canvas

2K/s

View exact numbers

Test name	Executions per second
✓ DrawImage half master into di canvas	651,267 Ops/sec
DrawImage whole master into di canvas	621,995 Ops/sec
rect	289,488 Ops/sec
PutImageData half master into pid canvas	2,129 Ops/sec
PutImageData whole master into pid canvas	2,011 Ops/sec

HTML Preparation code:

<canvas id='master' width='100' height='100'></canvas>
<canvas id='pid' width='100' height='100'></canvas>
<canvas id='di' width='100' height='100'></canvas>
<canvas id='rect' width='100' height='100'></canvas>

Script Preparation code:

var master = document.getElementById('master');
var masterctx = master.getContext('2d');
var pid = document.getElementById('pid').getContext('2d');
var di = document.getElementById('di').getContext('2d');
var rect = document.getElementById('rect').getContext('2d');

masterctx.fillRect(0,0,50,50);
masterctx.fillStyle = "red";
masterctx.fillRect(50,50,100,100);

Tests: