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A comment on How a new HTML element will make the Web faster. Parent comment

Re:How a new HTML element will make the Web faster by Siecje on Tuesday September 02, 2014 @10:59AM (#8257928)
How does the browser know to grab the 1x version or the 2x version?
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Re:How a new HTML element will make the Web faster by kaoD on Tuesday September 02, 2014 @12:39PM (#8258613)
I assumed 2x was for Retina-like screens. The browser already knows it and it's exposed via devicePixelRatio.

If I understood your question correctly.

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Re:How a new HTML element will make the Web faster by garethadams on Tuesday September 02, 2014 @12:36PM (#8258598)
The browser knows about the device it's running on, and specifically its display density.
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