Issues with large background images

RedRobo

Hi,

I usually create for Android but am interested in creating an interactive book for the iPad. This will be my first iOS app.

The thing I am wondering is how to create 19 full-res background images for my book and still keep the size under 120mb or whatever it has to be?

I think Gamesalad said to no longer compress images which mean .pngs at full iPad res are HUGE! I've seen lot's of other apps with many large images as backgrounds and just wondered how they achieve it?

Any help will be much appreciated.

Hopscotch

@strag, that depends on the type of images.

It the backgrounds are handpainted (usually with soft edges around objects), then a 1024x768 resolution is sufficient.

If the objects in the image have hard edges (vector graphics) you may need to increase the resolution to a point where it is acceptable.

Alternatively, see if there is a way that your backgrounds could be broken into elements. Objects like trees could be repeated over the scene and reused in others. Clouds, mountains etc could be made up of smaller parts and tiled across the scene.

Socks

@strag said:
The thing I am wondering is how to create 19 full-res background images for my book and still keep the size under 120mb or whatever it has to be?

The App Store file size limit is 2GB.

19 x ~9.5MB = 180.5MB

RedRobo

@Hopscotch‌ Thanks for the advice. I can't really break my images into elements and would like to use full res (2048x1536) if possible.

@Socks‌ Wow is it really 2GB! Sorry...not sure where I got 120MB from...I thought I read it being discussed on here somewhere but may have dreamt it!!! If that's the case I won't have a problem...apart from the user having to wait longer for the download of course:)

Just another quick question: If I upload an app with uncompressed 24bit PNGs to the server, do they get compressed on the Gamesalad side of things during the packaging? i.e. does my app come back smaller than the one I uploaded?