RESOLVED INVALID180582
MacOS screenshots can have the wrong DPI value 
https://bugs.webkit.org/show_bug.cgi?id=180582
Summary MacOS screenshots can have the wrong DPI value
Craig Francis
Reported 2017-12-08 08:11:09 PST
1) Open a browser window on a 144 dpi monitor 2) Run `screencapture -x -i screenshot.png`, press the [space] key, and screenshot the window. 3) Run `sips -g dpiWidth screenshot.png`. The DPI is incorrectly set to 72.000, it should say 144.000. When these screenshots are used, e.g. in an email (MacOS Mail), they will be shown at twice their normal size. Firefox correctly sets the DPI value. Chrome also sets the DPI correctly when the window is opened - but does not update it when moving between monitors. As in, when you drag the window over to a 72 DPI monitor, the screenshots will still be recorded as being 144.000 ( https://crbug.com/793312 )
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Simon Fraser (smfr)
Comment 1 2017-12-09 12:33:11 PST
Please file this bug at bug report.apple.com. It's not a WebKit bug.
Craig Francis
Comment 2 2017-12-10 03:24:15 PST
Thanks Simon, it has been raised as bug 35955716 https://bugreport.apple.com/web/?problemID=35955716
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