Reducing the size of image (in KBs)

M using UIImagePNGRepresentation to create a png image from a pdf file. I want to reduce the size of the image c开发者_Go百科reated.

how can it be done??

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Saving as a JPG with 90% quality will drastically reduce the size and the image will still look OK.
Because of the iPhone's high DPI display, it wouldn't be noticeable at all!

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you can load the png into a UIImage and then resize it.

this coves how to resize it.

http://vocaro.com/trevor/blog/2009/10/12/resize-a-uiimage-the-right-way/