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The Web Applications 1.0 specification defines a mechanism allowing web pages to store information with a web browser (similar to cookies) called “client-side session and persistent storage.” Although use of session storage is subject to a user’s cookie preferences, this preference allows it to be disabled entirely.

Possible values and their effects


Enable client-side session and persistent storage for web pages (Default)


Disable SCS entirely

First checked in

2006-08-18 by Neil Deakin

Has an effect in

  • Mozilla Firefox (nightly builds after 2006-08-18; 2.0)
  • SeaMonkey (nightly builds after 2006-08-18)

Related bugs

External links