Redesign Browser Privacy preferences to account for persistent mode
Design estimate
- Complexity: TBD
- Uncertainty: TBD
- Total: TBD
- Actual:
Context
Currently, there are 2 possible browsing modes for users:
- Normal mode: the data is saved in the disk, which means that the browser will remember information even after it is shut down.
- Private mode: the information is saved on memory, but not in the disk, which means that the browser will remember information within a session, but not after it is shut down.
We want to offer a new mode called Persistent mode, that keeps only specific information (e.g. cookies and passwords) in the disk. These information will be available in the browser in any newer sessions after it is closed; other data, however, will be deleted.
Once shipped, Persistent mode will replace Normal mode [1].
[1] It's possible for power users to still enable Normal mode by editing configuration options directly in about:config
, but that's very difficult for regular users + won't be supported at all.
Scope
- Redesign the Browser Privacy section at Settings to account for persistent mode.
Out of scope
- Any other layer of UI (e.g. modals that can be opened by clicking on any buttons).
Reference

Useful links
- Pad: Persistent mode sync
- Pad: Persistent mode hacking (in-person meeting)
- CSD matrix
Mockups
TBD
Acceptance criteria
TBD
Edited by Felicia