Using client hints (DPR, Width, and Viewport-Width) - very less support.
Now that we have identified the problem, there are a couple of ways to get the solution: In our example of the full-width banner above, the image occupies 100% of the available width The size of the image relative to the viewport Whether the image occupies 100% of the available width or 50% or 33%.The viewport dimensions Whether the viewport is 1280px wide or 640px or 320px.In short, we want the browser to load the correct image based on: But the same image is too big to use as a full-width banner on a mobile device with a 320px wide screen. A 1280px wide banner image would work well on a desktop device for this purpose. Let’s say you want to have a full-width banner on the top of your website. This is a wastage of time, bandwidth, and money, impacting the overall user experience and hence conversions on your website. This means that the user has to download more data than he should be downloading, which slows down the page load. Without a means to do this, you will sometimes have to send a larger image than what is actually required. Ideally, you would like to serve images that are resized to match the user’s viewport dimensions. With mobile traffic surpassing desktop traffic, it has become even more crucial to optimize images for different device sizes. To read a comprehensive latest guide on responsive images, checkout our reference guide which has covered all concepts with code samples and screenshots - Īccording to the HTTP Archive data, 64% of a website’s page weight, on an average, is made up of images.
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