Bad picture quality

[AC Question]

I uploaded a picture to Facebook and Twitter and the picture quality is all blurry, I set it as my wallpaper on my S3 and it's crystal clear

 

[itguyjax8430]

I uploaded a picture to Facebook and Twitter and the picture quality is all blurry, I set it as my wallpaper on my S3 and it's crystal clear

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Do you know what the resolution of the file is?