- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Fri, 17 Jan 2014 08:51:28 -0800
- To: Gérard Talbot <www-style@gtalbot.org>
- Cc: Felix Miata <mrmazda@earthlink.net>, www-style list <www-style@w3.org>
On Thu, Jan 16, 2014 at 10:30 PM, Gérard Talbot <www-style@gtalbot.org> wrote: > I do not understand how you can say and why you say that 16px is always > equal to 12pt, especially if DPI is 180. > > Setting the px value (from 16px to, say, 18px) has no impact on the DPI > setting: I understand that. > > As far as I understand this, 16px is equal to 12pt when and only when DPI > setting is 96. > > ...Maybe I'm wrong... pixel density per inch (DPI) affects how big or small > a 16px font size graphem looks. Please reread <http://dev.w3.org/csswg/css-values/#absolute-lengths>. The 'px' unit is an absolute unit, defined to have a 96:1 ratio with the 'in' unit (and thus a 4:3 ratio with the 'pt' unit). It has nothing to do with device pixels, which is what is measured by DPI. ~TJ
Received on Friday, 17 January 2014 16:52:16 UTC