how to compress image in iphone?

Question

I m taking images from photo library.I have large images of 4-5 mb but i want to compress those images.As i need to store those images in local memory of iphone.for using le

Answer 1

NSData *UIImageJPEGRepresentation(UIImage *image, CGFloat compressionQuality);

OR

NSData *image_Data=UIImageJPEGRepresentation(image_Name,compressionQuality);

return image as JPEG. May return nil if image has no CGImageRef or invalid bitmap format. compressionQuality is 0(most) & 1(least).