Persistent Storage Permission (Durable Storage)

Allow sites to request that web storage be treated as "persistent", preventing Chrome's automatic storage eviction from clearing storage for that site. The permission is automatically granted when the site: - Is bookmarked (if the user has <= 5 bookmarks) - Is added to homescreen - Has push notification permissions - Has high site engagement (Launched as Origin Trial in M52)

Specification

Working draft or equivalent

Status in Chromium

Enabled by default (launch bug) in:

• Chrome for desktop release 55
• Chrome for Android release 55
• Android WebView release 55
• Opera release 42
• Opera for Android release 42

Consensus & Standardization

• Firefox: In development
• Edge: No public signals
• Safari: No public signals
• Web Developers: Positive

Owners

• dknox@chromium.org
• dmurph@chromium.org
• jsbell@chromium.org

Last updated on 2016-10-10