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After adding a big picture (1.1 MB) to iPad app bundle, ipa file size changes from 2MB to 4.1MB. Can someone please explain why it happens and is it normal behaviour? I thought Xcode optimizes png files or am I wrong?

Simon McLoughlin
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  • Some times it happens but no issues.Our app size can be more than 1GB for submitting to store. (i Guess reason would be pixels of image) – Charan Giri Jan 03 '14 at 12:44
  • I would suggest you to use jpg format images for large size and non-transparent images such as for recurring backgrounds and so on. – Engnyl Jan 03 '14 at 13:28
  • You can also optimize pngs yourself using [ImageAlpha](http://pngmini.com) and/or [ImageOptim](http://imageoptim.com). If you do this, turn off `Compress PNG Files` in your project's `Build Settings`. – Joseph Chen Jan 04 '14 at 06:23

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