Web platform features explorer - Scheduler API

Web platform features explorer

The scheduler API provides a way to prioritize all tasks belonging to an application.

Status

Limited availability

MDN documentation

Prioritized Task Scheduling API

Specifications

Prioritized Task Scheduling, from Web Platform Incubator Community Group (W3C).

Browser support

Chrome 129 Released on 2024-09-17
Chrome Android 129 Released on 2024-09-17
Edge 129 Released on 2024-09-19
Firefox 142 Released on 2025-08-19
Firefox for Android 142 Released on 2025-08-19
Safari ❌
Safari on iOS ❌

Baseline availability blocked since August 2025 by Safari (0 months)

Usage (according to Chrome Platform Status)

~8.774% of page loads. More data at chromestatus.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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