How to animate “box-shadow” with silky smooth performance

How do you animate the box-shadow property in CSS without causing re-paints on every frame, and heavily impacting the performance of your page? Short answer: you don’t. Animating a change of box-shadow will hurt performance.

There’s an easy way of mimicking the same effect, however, with minimal re-paints, that should let your animations run at a solid 60 FPS: animate the opacity of a pseudo-element.

demo

How to animate “box-shadow” with silky smooth performance →

Published by Bramus!

Bramus is a frontend web developer from Belgium, working as a Chrome Developer Relations Engineer at Google. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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