Why are Transformed Elements Jagged in Chrome, and How Can `-webkit-backface-visibility` Help?

Eliminating Jagged Edges in Chrome: A CSS Transformation Precision Boost

Transforming images and textboxes using CSS3 transform can enhance a website's visual appeal. However, a common issue encountered in Chrome involves the appearance of jagged borders, resembling the low-resolution graphics of video games. While other browsers like IE, Opera, and FF handle transform operations with smooth anti-aliasing (AA), Chrome exhibits the issue.

Cause of Jagged Edges

The reason behind the jagged edges lies in the way Chrome processes transformed elements. Unlike other browsers, Chrome refrains from using AA while handling transforms, resulting in the rough appearance of the border.

Solution: -webkit-backface-visibility

To overcome this issue in Chrome, the -webkit-backface-visibility CSS property can be employed. By setting this property to hidden, the browser is instructed to suppress the visibility of the back face of a transformed element.

Consider the following example:

.rotate2deg {
    -webkit-backface-visibility: hidden;
}

By adding this property to the transform rule, Chrome is forced to use AA, eliminating the jagged edges and producing smooth borders for rotated elements.

Additional Considerations

While the -webkit-backface-visibility property effectively resolves the jagged edges issue in Chrome, it's worth noting that it only pertains to Chrome-based browsers. Browsers like Firefox and Edge utilize their AA mechanisms by default, rendering this property superfluous.

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