Opened 2 years ago

Last modified 17 months ago

#27522 new defect

Screen Size doesn't change with customizing Firefox toolbars

Reported by: awa7 Owned by: tbb-team
Priority: Medium Milestone:
Component: Applications/Tor Browser Version:
Severity: Normal Keywords: tbb-fingerprinting-resolution
Cc: Actual Points:
Parent ID: Points:
Reviewer: Sponsor:


The Screen Size in Tor Browser is forced to 1000x600px at my screen size. However, when changing the layout of the Toolbars via "Customize -> Density", the window stays the same. Even after hitting "New Identity", the window size stays the same, so the toolbars "eat" more (or less) of the inner screen size. You can run Panopticlick with the three different density settings, and only on "Narrow" you will get the 1000x600 (or I assume the other right screen size, if you don't have 1000x600).

I consider this kind of a privacy leak, because some people may change the toolbar layout, and they may think "Am using TB so everything's gonna be alright". On Panopticlick the screen size has a good impact.

Hope i described the "bug" or whatever good enough.

Child Tickets

Change History (2)

comment:1 Changed 2 years ago by gk

Keywords: tbb-fingerprinting-resolution added; Tor Browser Firefox Screen Size Fingerprint removed

Yes, that's currently breaking our fixed size window solution. I think something like #14429 might be a solution that helps here (too).

comment:2 Changed 17 months ago by Thorin

changing chrome (toolbars, theme density, app menu, sidebar, manually resizing, fullscreen, etc) will be mitigated with RFP letterboxing

I think we can close this in favor as a dupe of #14429

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