CODEWITHSUNDEEP
iosimagecore-dataimage-processingresize
user2128531
user2128531

Reputation: 153

Reduce image size till given value ios

UIImage *image = [UIImage imageNamed:@"anyImage.png"];

NSData *data = UIImageJPEGRepresentation(image, 0.032);

UIImage *newImage = [UIImage imageWithData:data];

I found this size reduction of image but my problem is that i need to store only 100kb of images. In my library i have 8159064kb of image which reduce upto 141258kb by this method. Please tell me a way to reduce size of image upto 100kb whatever size come it convert it to 100kb. Thanks in advance

Upvotes: 0

Views: 2032

Answers (1)

Guo Luchuan
Guo Luchuan

Reputation: 4731

you should resize the image.size so it can reduce your large image to 100k

You can make a UIImage category

like UIImage(Resize)

+(UIImage*)imageWithImage:(UIImage*)image andWidth:(CGFloat)width andHeight:(CGFloat)height
{
    UIGraphicsBeginImageContext( CGSizeMake(width, height));
    [image drawInRect:CGRectMake(0,0,width,height)];
    UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return newImage;
}

And then make a while loop to resize the image size to fit for <= 100KB

NSData *data = UIImagePNGRepresentation(_yourImage);
while (data.length / 1000 >= 100) {
    _yourImage = [UIImage imageWithImage:_yourImage andWidth:image.size.width/2 andHeight:image.size.height/2];
    data = UIImagePNGRepresentation(_yourImage);
}

// _yourImage is now reduce the size which is <= 100KB

Upvotes: 2

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