- From: Justin Novosad <junov@google.com>
- Date: Fri, 16 May 2014 18:06:47 -0400
- To: Rik Cabanier <cabanier@gmail.com>
- Cc: Katelyn Gadd <kg@luminance.org>, "whatwg@whatwg.org" <whatwg@whatwg.org>, Glenn Maynard <glenn@zewt.org>, Ian Hickson <ian@hixie.ch>
On Fri, May 16, 2014 at 5:42 PM, Rik Cabanier <cabanier@gmail.com> wrote: > > Is the Web page not composited in sRGB? If so, it seems the backing store > should be sRGB too. > > The web page is not composited in sRGB. It is composited in the output device's color space, which is often sRGB or close to sRGB, but not always. A notable significant exception is pre Snow Leopard Macs that use a gamma 1.8 transfer curve. By the way, sniffing the display color profile through getImageData is a known fingerprinting technique. This factor alone can be sufficient to fingerprint a user who has a calibrated monitor.
Received on Friday, 16 May 2014 22:07:14 UTC