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ImageIO versus UIImageJPEGRepresentation
// UIImageJPEGRepresentation
NSData *data = UIImageJPEGRepresentation(tileImage, 0.71);
[data writeToURL:cacheURL atomically:YES];
// ImageIO
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/UTCoreTypes.h>
CGImageDestinationRef destination = CGImageDestinationCreateWithURL((CFURLRef)cacheURL, kUTTypeJPEG, 1, NULL);
NSDictionary *destOptions = [NSDictionary dictionaryWithObject:[NSNumber numberWithFloat:0.71] forKey:(NSString *)kCGImageDestinationLossyCompressionQuality];
CGImageDestinationAddImage(destination, [scaledTileImage CGImage], (CFDictionaryRef)destOptions);
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jllubia commented Dec 11, 2012

UIImageJPEGRepresentation uses ImageIO underneath.

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shaneowens commented Dec 18, 2013

Do you have any bench marks for memory usage and speed?

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