High memory consumption when loading a gif image

[antonzhigalov]

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Issue Description

I'm trying to show a gif image in an imageview that results in high memory consumption in the app - over 1GB for a 550KB gif file.

Reproduce

Code example:

import UIKit
import Kingfisher

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let imageView = UIImageView()
        imageView.frame = self.view.bounds
        imageView.kf.setImage(with: URL(string: "https://blog.elfster.com/wp-content/uploads/2024/09/Wish-of-the-Week-2024-Blog-Header-1.gif")!)
        
        self.view.addSubview(imageView)
    }
}

[onevcat]

When using UIImageView to display a gif, by default the whole gif frames are loaded into the memory. If you have a gif with huge frames or large in size, it might cause issues.

To get a better memory performance, consider to use the AnimatedImageView.