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Comment by thoughtpalette | Hacker News Reader

If 125% DPI is a standard for your users, of course you should accommodate for it when you can.

UI development has always been developing for the most common denominator and then the best you can make it for the most amount of users.

If the user has a manual zoom in the browser, there's not much you can do from a developer perspective.

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Is there any data on that? I am interested how many people use different % DPI on desktop, what % of the people use scaled font sizes on iOS and Android.

There's plenty of resources out there for 'Browser Stats'. it would really depend on the projects target audience. I have not personally seen any numbers on DPI%, but I wouldn't be surprised if they exist.

You can achieve some flexibility in layout for device, resolution and pixel ratio constraints using CSS media queries, it just depends how granular you want to go and how much time it takes to implement all the use cases from a business perspective (from experience)

almost all iOS devices and the majority of Android devices DPI is > 100%.

Almost all Macbooks DPI is > 100%.

Majority of the new mid-high end windows laptop DPI > 100%.

I don't think that matters developing web apps. Unless you are confusing with Ctrl/CMD + Plus font size increase.

Which is why you do not and cannot target devices cause you cannot know what the user has set such things.

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