Run results for: canvas clearRect vs fillRect vs resize

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 149

Operating system: Android

Device Platform: Mobile

Date tested: 2 months ago

Benchmark engine: Benchmark.js

fillRect

5.1M/s

clearRect

4.7M/s

resize

647K/s

View exact numbers

Test name	Executions per second
✓ fillRect	5,067,161 Ops/sec
clearRect	4,696,125 Ops/sec
resize	647,164 Ops/sec

Script Preparation code:

var width = 2560;
var height = 1300;
var canvas = document.createElement("canvas");
canvas.width = width;
canvas.height = height;
var ctx = canvas.getContext("2d");
document.body.appendChild(canvas);

ctx.fill = 'black';

Tests:

clearRect
ctx.clearRect(0, 0, width, height);
fillRect
ctx.fillRect(0, 0, width, height);
resize
canvas.width = width; canvas.height = height;

Run results for: canvas clearRect vs fillRect vs resize

Testing performance between clearRect and fillRect on a canvas.

clearRect

fillRect

resize