The primary goal of formatting your images is to find the balance between the lowest file size and an acceptable quality. How To Optimize Images for Web and Performance? □ Optimize them! Click to TweetĪs a Kinsta customer, you can benefit from image optimization for free by enabling automatic image optimization with just a few clicks. Images make up on average 21% of a web page's overall weight. ![]() Requires less storage space on your server (this depends upon how many thumbnails you optimize).Networks and browsers will appreciate this. Smaller image file sizes use less bandwidth.Curious about what percentage of your traffic comes from Google image search? You can use a Google Analytics WordPress plugin or segment to check Google image search traffic. Google is also likely to crawl and index your images faster for Google image search. Large files slow down your site and search engines hate slow sites. Your site will rank higher in search engine results. Combined with a great SEO WordPress plugin it improves your SEO.For more information about optimizing your page loading time see our in-depth page speed optimization guide. If your page takes too long to load your visitors might get tired of waiting and move on to something else. It will improve your page loading speed (see our case study below for how much it affects your speed).And ironically, a good image optimization workflow is one of the easiest things to implement, yet a lot of website owners overlook this. It’s more important than scripts and fonts. So when it comes to optimizing your site, after video content, images are by far the first place you should start! According to HTTP Archive, as of November 2018, images make up on average 21% of a total webpage’s weight. This is the default for elements but should be specified otherwise.Check Out Our Video Guide to Optimizing Images for SEO The Benefits of Formatting Your Imagesįirst, why do you need to format your images? What are the benefits? There are numerous benefits of optimizing your images for performance.When using fill, the parent element must have display: block.This is necessary for the proper rendering of the image element in that layout mode.When using fill, the parent element must have position: relative.You cannot use styled-jsx because it's scoped to the current component (unless you mark the style as global).You can also use the style prop to assign inline styles.This can be an imported CSS Module, a global stylesheet, etc. In most cases, we recommend using the className prop.Use className or style, not styled-jsx.Styling the Image component is similar to styling a normal element, but there are a few guidelines to keep in mind: If none of the suggested methods works for sizing your images, the next/image component is designed to work well on a page alongside standard elements. If your application is retrieving image URLs using an API call (such as to a CMS), you may be able to modify the API call to return the image dimensions along with the URL. If you're serving images from a source that you control, consider modifying your image pipeline to normalize the images to a specific size. You can also use object-fit with fill, contain, or cover, and object-position to define how the image should occupy that space. Consider using CSS to give the image's parent element space on the page along sizes prop to match any media query break points. The fill prop allows your image to be sized by its parent element. If you are accessing images from a source without knowledge of the images' sizes, there are several things you can do: What if I don't know the size of my images? Implicitly, by using fill which causes the image to expand to fill its parent element.Explicitly, by including a width and height property.This allows the browser to reserve precisely enough space for the image before it loads.īecause next/image is designed to guarantee good performance results, it cannot be used in a way that will contribute to layout shift, and must be sized in one of three ways: The way to avoid image-based layout shifts is to always size your images. This performance problem is so annoying to users that it has its own Core Web Vital, called Cumulative Layout Shift. ![]() One of the ways that images most commonly hurt performance is through layout shift, where the image pushes other elements around on the page as it loads in. ![]() See more about priority in the next/image component documentation.
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