WKWebView: how to display a big HTML5 canvas?

Hello,

Viewport is 1180x820 on iPad, even if screen resolution is 2360x1640.

If I set up a canvas of 2360x1640, only a quarter is displayed on my WKWebView. And I have to display a 2360x1640 canvas.

So I'm not able to display it in my WKWebView on my iPad. I'm sure I do something wrong.

Could you please help me? Regards, Alex