How Can I Disable Antialiasing When Scaling Images in CSS?

Disabling Antialiasing in Image Scaling

When enlarging an image, antialiasing, a technique that smooths the edges of pixels, is often applied to reduce pixelation. However, in some cases, it may be desirable to preserve sharp edges, making antialiasing undesirable.

In CSS, there are no direct flags to disable antialiasing. However, a combination of properties can achieve a similar effect:

img {
    image-rendering: optimizeSpeed;
    image-rendering: -moz-crisp-edges;
    image-rendering: -o-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: pixelated;
    image-rendering: optimize-contrast;
    -ms-interpolation-mode: nearest-neighbor;
}

The image-rendering property sets the image's rendering algorithm. The optimizeSpeed value prioritizes speed over quality, resulting in pixelated edges. The browser-specific -moz-crisp-edges, -o-crisp-edges, and -webkit-optimize-contrast values also contribute to crispy visuals.

Additionally, pixelated, optimize-contrast, and -ms-interpolation-mode: nearest-neighbor ensure pixelated rendering across various browsers, including IE8 .

By applying these properties, images can be scaled up without the unwanted smoothing introduced by antialiasing, preserving their sharp outlines.

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