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)


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
  • Opera release 42
  • Opera for Android release 42

Consensus & Standardization

  • In development
  • No public signals
  • No public signals
  • Positive


Last updated on 2017-06-14