How to get the Size (KB) of UIImage

Question

I am getting Image from didFinishPickingMediaWithInfo.

UIImage *originalImage = (UIImage*)[info valueForKey:UIImagePickerControllerOriginalImage];

I want to get the size of Image in Kb.

The size of the internal representation or the size of the file on disk? — trojanfoe, Feb 19 '13 at 12:04
Similar question http://stackoverflow.com/questions/10815292/how-to-get-size-of-uiimage-size-like-500-kb-600-kb-etc — Shashank, Feb 19 '13 at 12:07

Mutawe · Accepted Answer · 2017-11-15T07:20:43.640

24

    UIImage *originalImage = (UIImage*)[info valueForKey:UIImagePickerControllerOriginalImage];
    NSData *imgData = UIImageJPEGRepresentation(originalImage, 1); //1 it represents the quality of the image.
    NSLog(@"Size of Image(bytes):%d",[imgData length]);
    imgData = nil;

edited Nov 15 '17 at 07:20

answered Feb 19 '13 at 12:29

Mutawe

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Looks expensive! You are creating a duplicate on-disk representation just to get its size! – trojanfoe Feb 19 '13 at 13:09
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@trojanfoe any other solution? – Amir iDev Feb 19 '13 at 15:18
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@AmiriDev if it came from disk then you can get the url from the dictionary passed with that delegate call and then use `NSFileManager` to get file information. I am only guessing though... – trojanfoe Feb 19 '13 at 15:20

score 0 · Answer 2 · answered Mar 15 '18 at 03:07

I think the op's size (kb) is the memory size of originalImage, right?

Check out the usage about malloc_size under the ARC refer to this.

#import <malloc/malloc.h>

NSLog(@"Size of %@: %zd", NSStringFromClass([originalImage class]), malloc_size((__bridge const void *)originalImage));

How to get the Size (KB) of UIImage

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