iosiphonedesign-guidelines

Why apple don't recommend JPG files?

According to Apple guidelines, they recommend all images to be png.

https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html

I have a big background, which is almost 1.5 mb in PNG and 150 Kb in JPG. Having smaller image size will help me in smaller app size.

Can I use JPG file, or it will be against Apple guidelines.

Solution

  • Using JPEGs will not be against Apple guidelines. However you will not be able to use transparent images with JPEGs as they don't have an alpha channel.