Why Does CSS Scaling and Translate3D Cause Blurry Text in WebKit Browsers?

WebKit's Blurry Text Conundrum with CSS Scaling and Translate3D

In Chrome and other WebKit browsers, apply CSS scaling alongside translate3d results in an unwanted blurring effect for the scaled content. A notable example of this can be seen in the provided JS Fiddle.

Understanding the Issue

WebKit browsers essentially treat 3D transformed elements as textures for hardware 3D acceleration. This approach leads to the blurring artifact when these elements undergo both scaling and translate3d.

Proposed Workaround

Unfortunately, there is no direct workaround for this specific issue. However, one can mitigate the blurriness by increasing the size of the text and downscaling the entire element. This effectively creates a higher-resolution texture, reducing the visibility of the blur.

In the provided Fiddle (http://jsfiddle.net/SfKKv/), the text size has been increased and offset to match the amount of translate3d that was applied. Additionally, a text shadow has been introduced to further improve antialiasing.

Points to Note

It's important to acknowledge that this workaround will not entirely eliminate the blurriness, particularly with small fonts or sharp edges. If the ultimate goal is to achieve crisp text, it may be necessary to consider alternative rendering approaches or techniques.

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