Canvas.toDataURL image type performance (v21)

Revision 21 of this benchmark created on

Description

Tests toDataURL image types with a large canvas

Preparation HTML

<canvas id="canvas" width="1280" height="720" style="width:1280px; height:720px;">
</canvas>

Setup

c = document.getElementById("canvas");
    ctx = c.getContext("2d");
    cpa = ctx.createImageData(1280, 720);
    for (var i = 0; i < 1280 * 720; i++) {
      cpa.data[i * 4 + 0] = Math.round(Math.random() * 255);
      cpa.data[i * 4 + 1] = Math.round(Math.random() * 255);
      cpa.data[i * 4 + 2] = Math.round(Math.random() * 255);
      cpa.data[i * 4 + 3] = 255;
    }
    ctx.putImageData(cpa, 0, 0);

Test runner

Ready to run.

Testing in
TestOps/sec
image data
data = ctx.getImageData(0, 0, 1280, 720);
ready
image/jpeg 1.0
c.toDataURL("image/jpeg", 1.0);
ready
image/jpeg 0.9
c.toDataURL("image/jpeg", 0.9);
ready
image/png 1.0
c.toDataURL("image/png", 1.0);
ready
image/png 0.9
c.toDataURL("image/png", 0.9);
ready

Revisions

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