[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Animation](./puppeteer.protocol.animation.md) > [KeyframeStyle](./puppeteer.protocol.animation.keyframestyle.md) > [easing](./puppeteer.protocol.animation.keyframestyle.easing.md) ## Protocol.Animation.KeyframeStyle.easing property `AnimationEffect`'s timing function. Signature: ```typescript easing: string; ```