Letterboxing and Scrollbars Dimensions
Letterboxing's reason of existence is to improve the users' privacy by reducing yet another fingerprinting bit. But the solution isn't perfect - there are many operating systems and window managers, and countless themes. And every one of them can have different scrollbar dimensions - which helps to fingerprint the user.
For example, in a page with a vertical scrollbar my window widths is being reported as 984px instead of 1000px with Tor Browser's "content window dimensions rounding" (#14429 (moved)), or 1184px instead of 1200px with FF67's letterboxing.
Would it be possible to maybe move the scrollbars (both vertical and horizontal) out of the "letterbox"?
Trac:
Username: edgewall