ios - Is there a way to check if 3x assets are the correct resolution without using simulator? -

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i want check if 3x assets have in correct resolution. don't have knowledge objective-c or swift, there way check without using xcode?

i have basic knowledge of swift , xcode (navigating , such) if can give me steps think can it.

i want check because have low resolution file maximum output of 2x, i'm trying find way 3x without losing quality migrating psd file ai.


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