[HN Gopher] Designer's Guide to DPI
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       Designer's Guide to DPI
        
       Author : omarfarooq
       Score  : 23 points
       Date   : 2021-10-12 11:01 UTC (2 days ago)
        
 (HTM) web link (sebastien-gabriel.com)
 (TXT) w3m dump (sebastien-gabriel.com)
        
       | radley wrote:
       | It's good, but dated (2014).
        
       | kevingadd wrote:
       | Lots of errors in this article. This for example is blatantly
       | wrong and has been wrong for an eternity:
       | 
       | Current OS do not scale 4K, it means that if you plug a 4K
       | display to a Chromebook or a macbook, it will use the highest DPI
       | asset, in this case the 200% or @2x ones, and display them at
       | normal ratio, making everything look good but tiny. Hypothetical
       | example: If you plug a 12" 4K screen to a computer with a 12" hi-
       | res screen (2x), everything will appear twice as small.
       | 
       | Windows has literally had some degree of high-DPI support since
       | 95, and has been able to adapt to that hypothetical example for
       | years. All of Apple's devices handle it too even if you have to
       | coax them a bit to understand your display geometry. I really
       | don't know what the author is trying to convey there.
        
         | marcellus23 wrote:
         | Yep. macOS only supports 1x and 2x (maybe 3x?) natively, but
         | will happily let you render at a higher-than-native res and
         | scale down so you can approximate intermediate UI scales. And
         | Windows seems to natively support vector rendering, with a
         | large offering of different UI scales -- albeit 3rd party
         | support for this is really hit or miss in my experience.
        
       | rudian wrote:
       | This looks pretty comprehensive and saves me from writing an
       | article I've had in the back of my mind for a while.
       | 
       | One core concept: Forget about "DPI" unless you're printing or
       | engineering monitors. You, designer, can't decide how many pixels
       | go in an inch. "72DPI" is a lie.
        
         | kevingadd wrote:
         | Screen DPI values for modern devices tend to be pretty accurate
         | and are useful if you want to at least approximate how big a
         | square should be on someone's screen. For accessibility
         | purposes you really want to make sure your text is big enough.
        
       | isatty wrote:
       | I thought this was about deep packet inspection. Maybe we should
       | disambiguate acronyms in the title if there's space.
        
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       (page generated 2021-10-14 23:00 UTC)