I'm struggling with optimizing images for retina display on my website. I typically use the drawImage method, but I have a collection of large images (canvas drawn) that I want to use at half their size while maintaining image quality.
Does anyone know how to achieve this? The images are stored on an off-screen canvas.
To increase the resolution of an image, you can oversample it by reducing its CSS size compared to the canvas elements size:
Example with a larger html canvas element:
<canvas id="canvas" width=800 height=400></canvas>
Applying smaller CSS styling (resulting in 2x oversampling):
#canvas{ width:400px; height:200px; }
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