[tbb-bugs] #14429 [Tor Browser]: Automated rounding of content window dimensions

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Jan 28 05:55:15 UTC 2015

#14429: Automated rounding of content window dimensions
 Reporter:  arthuredelstein     |          Owner:  tbb-team
     Type:  defect              |         Status:  new
 Priority:  normal              |      Milestone:
Component:  Tor Browser         |        Version:
 Keywords:  tbb-fingerprinting  |  Actual Points:
Parent ID:                      |         Points:
 I've written a small patch for torbutton that forces the content
 ("gBrowser") to have dimensions be a multiple of 200x200. In other words,
 window.innerWidth and window.innerHeight, and similar calls, always return
 a rounded number.

 This should at least provide some protection to users who resize or
 maximize their Tor Browser window with JS activated.

 I haven't dealt with the zooming issue here, but that would be an
 interesting next step.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/14429>
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