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)


Working draft or equivalent

Status in Chromium


Enabled by default (tracking bug) in:

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

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • In development
  • No signal
  • No signal
  • Positive


Search tags

durable, persistent, storage, permission,

Last updated on 2020-11-09