Function applyBackgroundColor

Apply a solid background color to an image.

Creates a new canvas with the specified background color and composites the original image on top. Useful for replacing transparent backgrounds with solid colors.

Throws

When canvas context creation fails

Example

// Apply white background
const withWhiteBg = applyBackgroundColor(cutout, [255, 255, 255, 255]);

// Apply red background with 50% opacity
const withRedBg = applyBackgroundColor(cutout, [255, 0, 0, 128]);

// Apply transparent background (no change)
const withTransparentBg = applyBackgroundColor(cutout, [0, 0, 0, 0]);
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