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----
-breadcrumbs:
-- - /teams
- - Teams
-- - /teams/animations
- - Animations Team
-page_name: animation-worklet
-title: Animation Worklet
----
-
-Animation Worklet is a new primitive that provides extensibility for web
-animations and enables high performance scripted animations that can run on
-dedicated thread. The feature is developed as part of the [CSS Houdini task
-force](https://github.com/w3c/css-houdini-drafts/wiki).
-
-The Animation Worklet API provides a method to create scripted animations that
-control a set of animation effects. These animations are executed inside an
-isolated execution environment, *worklet* which makes it possible for browser to
-run such animations in their own dedicated thread to provide a degree of
-performance isolation from main thread. Worklet animations may be created and
-controlled via Web Animations API. Animation Worklet combined with other new
-features such as [ScrollTimeline](https://wicg.github.io/scroll-animations/),
-[Input in
-Worklets](https://github.com/w3c/css-houdini-drafts/issues/834#issuecomment-470579488),
-can allow many currently interactive main-thread rAF-based animations to move
-off main thread which improve smoothness.
-
- [Specification](https://drafts.css-houdini.org/css-animationworklet/)
-
- [Explainer](https://github.com/w3c/css-houdini-drafts/blob/master/css-animationworklet/README.md)
-
- [Design Principles and
- Goals](https://github.com/w3c/css-houdini-drafts/blob/master/css-animationworklet/principles.md)
-
- Tests:
- <https://github.com/web-platform-tests/wpt/tree/master/animation-worklet>
-
- Example codes [1](https://googlechromelabs.github.io/houdini-samples/),
- [2](https://aw-playground.glitch.me/),
- [3](https://houdini.glitch.me/animation)
-
- [Blink Design
- Document](https://docs.google.com/document/d/1MdpvGtnK_A2kTzLeTd07NUevMON2WBRn5wirxWEFd2w/edit?usp=sharing)
-
-Current Status
-
-<table>
-<tr>
-<td><b> Milestone</b></td>
-<td><b> Status </b></td>
-<td><b> Key features</b></td>
-</tr>
-<tr>
-<td> Animation Worklet Prototype</td>
-<td>Done</td>
-<td> Scripted custom animation, single effect, only fast properties, off main-thread (using compositor thread).</td>
-</tr>
-<tr>
-<td> Animation Worklet <a href="https://developers.google.com/web/updates/2018/10/animation-worklet">Origin Trial</a></td>
-<td>In progress (<a href="https://docs.google.com/forms/d/e/1FAIpQLSfO0_ptFl8r8G0UFhT0xhV17eabG-erUWBDiKSRDTqEZ_9ULQ/viewform">signup</a>)</td>
-<td> Scroll input (via ScrollTimeline), basic web-animation controls (play/cancel), move to dedicated thread, optimized performance.</td>
-</tr>
-<tr>
-<td> Animation Worklet V1 - MVP</td>
-<td>Scheduled for M75</td>
-<td> Animate all properties (slow path ones runs in sync with main thread), sophisticated scheduling so we do not block compositor thread, improved scroll timeline integration. </td>
-</tr>
-<tr>
-<td>Animation Worklet V2 </td>
-<td>TBD</td>
-<td> Pointer input via Events, multi-input animation, support GroupEffects, improved integration with Paint Worklet.</td>
-</tr>
-</table> \ No newline at end of file