双十一图片瘦身推荐

from PIL import Image

def resize_image(input_path, output_path, size):
    with Image.open(input_path) as img:
        img.thumbnail(size)
        img.save(output_path)

# 示例：将图片调整为宽度为800像素
resize_image('original.jpg', 'resized.jpg', (800, None))

<img src="image.webp" alt="Description">

<img src="placeholder.jpg" data-src="real-image.jpg" alt="Description" class="lazyload">

document.addEventListener("DOMContentLoaded", function() {
    var lazyImages = [].slice.call(document.querySelectorAll("img.lazyload"));
    if ("IntersectionObserver" in window) {
        let lazyImageObserver = new IntersectionObserver(function(entries, observer) {
            entries.forEach(function(entry) {
                if (entry.isIntersecting) {
                    let lazyImage = entry.target;
                    lazyImage.src = lazyImage.dataset.src;
                    lazyImage.classList.remove("lazyload");
                    lazyImageObserver.unobserve(lazyImage);
                }
            });
        });
        lazyImages.forEach(function(lazyImage) {
            lazyImageObserver.observe(lazyImage);
        });
    }
});