I'm looking for advice on how to optimize the loading of a large animated gif (1900px wide) on my website. Currently, the initial load time is quite lengthy and the animation appears choppy. Is there a more efficient method to load the gif without slowing down the site and causing the scrolling to be choppy?
If you choose to load the image with dimensions of just 1px wide and 1px tall, your scrolling experience will remain unaffected. Here's a handy CSS/HTML trick for loading large images:
<img src="http://placekitten.com/1000/1000" width="1" height="1" onload="this.style.height = 'auto'; this.style.width = 'auto';">Start by loading the image at a size of 1px, then let it display normally once the loading is complete.
If you prefer to load the image only after the body has fully loaded, give this a try:
function initBanner(){
var bannerSrc = "http://placekitten.com/1000/1000";
// stores the image's source URL
var banner = document.getElementById('banner1');
// refers to the image object
banner.src = bannerSrc;
// sets the image source
}<body onload="initBanner()">
<!-- call the initBanner() function once the body has finished loading -->
<img id="banner1" src="" />
</body>To ensure faster loading times, preload the image and then insert it into your webpage once it has fully loaded:
const image = new Image();
image.onload = function() {
document.getElementById('image-container').appendChild(image);
};
image.src = 'image.gif';
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