Run results for: drawImage() img vs canvas vs bitmap + cropping

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

img

343.5M/s

canvas

343.0M/s

bitmap

340.8M/s

View exact numbers

Test name	Executions per second
✓ img	343,506,752 Ops/sec
canvas	343,043,648 Ops/sec
bitmap	340,774,432 Ops/sec

Script Preparation code:

var canvas = document.createElement('canvas')
var context = canvas.getContext('2d')
var bitmap
var img = new Image()
img.onload = async () => {
    canvas.width = img.width
    canvas.height = img.height
    context.drawImage(img, 0, 0)
    bitmap = await createImageBitmap(img)
}
img.src = 'https://neurostof.nl/ns/letters.jpg'

var c = document.createElement('canvas').getContext('2d')


// bitmap && c.drawImage(img,    250, 250, 250, 250, 0, 0, 1000, 1000)
// bitmap && c.drawImage(canvas, 250, 250, 250, 250, 0, 0, 1000, 1000)
// bitmap && c.drawImage(bitmap, 250, 250, 250, 250, 0, 0, 1000, 1000)

Tests:

img
bitmap && c.drawImage(img, 250, 250, 250, 250, 0, 0, 1000, 1000)
canvas
bitmap && c.drawImage(canvas, 250, 250, 250, 250, 0, 0, 1000, 1000)
bitmap
bitmap && c.drawImage(bitmap, 250, 250, 250, 250, 0, 0, 1000, 1000)