Web features explorer - Clearing site data

Web features explorer

The Clear-Site-Data header deletes browsing data (such as cookies, storage, or cache) associated with the requesting website.

Browser support

Chrome Not supported Bugs: 398149359 607897 40599527
Chrome Android Not supported Bugs: 40599527
Edge Not supported Bugs: 40599527
Firefox 138 Released on 2025-04-29
Firefox for Android 138 Released on 2025-04-29
Safari 17 Released on 2023-09-18
Safari on iOS 17 Released on 2023-09-18

Baseline availability blocked since April 2025 by Chromium (15 months)

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MDN documentation

Clear-Site-Data header

Specifications

Clear Site Data, from Web Application Security Working Group (W3C).

Usage (according to Chrome Platform Status)

~0.277% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

View as JSON | Edit this feature | Report an issue | Web-features entry: source, dist