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Images generally occupy the majority of the data size of a web page. Images that are not properly optimized can significantly slow down page load times and negatively impact the browsing experience, especially for mobile users. The following points are the benefits of optimization.

・Improve page loading speed

・Reducing server load

・Improve SEO performance

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Lazy loading is a technique that does not load images until the user scrolls down as the web page loads. This speeds up initial page display and allows users to view content right away.

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Image format selection is also important. In addition to the common JPEG and PNG, you should also consider using the latest format, WebP. WebP can significantly reduce image size while preserving quality.