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There's also navigator.hardwareConcurrency which can tell you the number of CPU threads available to a device.

Unfortunately, it looks like Apple caps this value to 2 on iOS for anti-fingerprinting purposes.



Sounds more like “fortunately” for iOS users...


Fortunately for privacy; unfortunately for the performance of heavy webapps that may need an accurate hardware.navigatorConcurrency value for CPU scaling.


How many heavy web apps that would need it actually run on an iOS device?


I hear a tiny violin playing a sad song..




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