If you take a photo with your smartphone, depending on your settings, that photo could be in the region of 2500 pixels wide (or even more) with a file size of 3MB (or 3000KB). To give you a point of reference, the main content column of this blog is 796 pixels wide. The file size is measured in kilobytes (KB) and megabytes (MB) The larger the dimensions of your image, the larger the file size. The dimensions of the image, i.e., how much space on the screen an image takes up, are measured in pixels, and while they do not 100% dictate file size, they are related. And it can be a real game-changer for your WordPress site performance.įile Size Matters: Why You Should Resize and Compress Images Understanding image dimensions and file sizes □ Reducing page size by reducing image size is a simple and effective strategy for improving load time. You can have a small number of HTTP requests, but you will have a problem with your hands if those requests summon giant images. The number of HTTP requests is commonly cited as a factor in load time, and while it is important, ultimately, it’s the page size that is the real indicator of speed or slowness. The load time is 12 seconds, and the size of the page is 8MB. Here’s an example of what un-optimized images will do to your site: In extreme cases, it could be closer to 60% of the loading time. Often this is the single largest factor of the loading time. To give you an idea: images contribute, on average, about 30% of the total page load time. So, if you can get a handle on how to work with and optimize images, you can improve the speed of your site and optimize the Core Web Vitals’ performance.īased on our experience with WP Rocket customers, we know that one of the most common problems is related to heavy pages, which sometimes come packed with high-resolution pictures, photo widgets, and hefty image sliders. Even with caching and a CDN, an unoptimized image will still drag down your page loading time and affect the Largest Contentful Paint score, one of the Core Web Vitals metrics.īut, as the website owner, images are completely under your control. Images are typically one of the biggest (and overlooked) performance issues. Ready to start the ball rolling? Let’s go! Large Images Are One of the Biggest Drains on Load Time Last but not least, you’ll learn how to improve your site’s performance even more through lazy loading. We’ll dig even deeper recommending a very useful WordPress image optimization plugin, Imagify. You’re going to learn everything about how to resize and compress your images, maintain their quality, and how to choose the best online image optimizers. That’s why we’re here to provide you with all the insights about image optimization for WordPress! Google is always wary and ready to judge your moves when it comes to web performance, and you don’t want to disappoint it, right? Images are a crucial element of every website: they make posts and pages more interesting and appealing to read, but they can quickly become a burden for your performance and PageSpeed score.
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