All Image Downloader is a powerful image downloader, from which you can extract and download all images from one website in batch, especially for famous image websites like Instagram, Pinterest, Google images, etc. And it is really, really easy to use. As long as you have opened All Image Downloader, what you need is just to paste the URL from your favored website. Then, you can press the "start" button to extract images, and all resources will display in front of you, waiting for your downloading.
To my astonishment, the developer of All Image Downloader is continuously updating the All Image Downloader, like it can extract & download videos now, and they promise that more features are coming soon.