reduce camera/photo library image file size for less than 100 KB in iphone

Question

I want to reduce image file size that take from UIImagePickerController . I use this method

NSData *imageData = UIImageJPEGRepresentation(image, 0.1);

but it reduce 2.2 MB image file size to 300 KB I want my image file size become less than 100 KB.

Answer 1

Apple's docs state:

The quality of the resulting JPEG image, expressed as a value from 0.0 to 1.0. The value 0.0 represents the maximum compression (or lowest quality) while the value 1.0 represents the least compression (or best quality).

And since the compression quality is a CGFloat, it supports decimal places beyond the tenths place. That being said, try:

NSData *imageData = UIImageJPEGRepresentation(image, 0.032);

Answer 2

Easiest way to reduce image size in kilos is to reduce the size in pixels! Scale it smaller:

CGFloat scaleSize = 0.2f;
UIImage *smallImage = [UIImage imageWithCGImage:image.CGImage
                      scale:scaleSize
                      orientation:image.imageOrientation];