Cookie Store API

Category: Offline / Storage
Type: New or changed feature
Status: Enabled by default (Chrome 87)
Intent stage: Shipped

Summary

The Cookie Store API exposes HTTP cookies to service workers and offers an asynchronous alternative to document.cookie.

Motivation

Today, cookies have extremely high usage, however the interface to cookies have been a source of complexity and performance issues. The Cookie Store API aims to improve this by providing an asynchronous alternative to document.cookie and exposing HTTP cookies to service workers which will also come with performance benefits. Its interface also encourages developers to make better decisions about security.

Standards & signals

Specification: https://wicg.github.io/cookie-store
Firefox: Defer
Safari: No signal
Web developers: Positive — Cookies are commonly used for login sessions. Cookie Store API will allow Service Workers to react to session state changes and cleanup irrelevant or private cached data.
Tracking bug: https://crbug.com/729800

Docs: https://developers.google.com/web/updates/2018/09/asynchronous-access-to-http-cookies https://docs.google.com/document/d/1ak6JzOMMO5q3dXvu4mHFWR-LLvaDc09XDvdeJZLtZd4/

Samples: https://wicg.github.io/cookie-store/explainer.html https://github.com/web-platform-tests/wpt/tree/master/cookie-store

Explainers: https://github.com/WICG/cookie-store/blob/main/explainer.md

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