# Clear-Site-Data

DevFeed: [Clear-Site-Data](<https://devfeed.tech/articles/clear-site-data-89165.md>)

Original publisher: [Read original article](<https://specification.website/spec/security/clear-site-data/>)

Author: Joost de Valk

Published: 2026-06-22T00:00:00Z

Content type: tutorial

Language: en

Sources: [The Website Specification](<https://devfeed.tech/sources/the-website-specification.md>)

Topics: [Cookies](<https://devfeed.tech/topics/cookies.md>), [Cross-origin resource sharing (CORS)](<https://devfeed.tech/topics/cors.md>)

Tags: [cookies](<https://devfeed.tech/tags/cookies.md>), [devtools](<https://devfeed.tech/tags/devtools.md>), [http](<https://devfeed.tech/tags/http.md>), [optional](<https://devfeed.tech/tags/optional.md>), [security](<https://devfeed.tech/tags/security.md>)

## AI overview

The Clear-Site-Data response header clears selected browser data for an origin, including cookies, storage, and caches. The article explains using it on sign-out responses, limiting its scope, and verifying that it works over HTTPS.

## Source excerpt

Clear-Site-Data lets a response tell the browser to wipe cookies, storage, and caches for your origin. Send it on logout so a shared device keeps nothing behind.