iOS: How to reduce image size for splashscreen

Question

For a universal app to support iphones and ipads, there are several resolutions, retina or non-retina screen, portrait and landscape orientation, so that there would be many *.png, this will hugely increase the final size of app bundle size.

Is there any good advice for reduce image sizes?

Answer 1

You can try Imageoptim, which can optimize also png and jpeg images.