6 Ways to Optimize Website Images Without Impacting Performance

1. Explore WebP as an image format. It's a relatively new image compression format, pioneered by Google, which results in images that are 25 percent to 34 percent smaller than their JPEG counterparts.

2. Use progressive images judiciously. Research has found that users didn't care for progressive images when used for feature content, but progressive JPEGs do carry a smaller file size and load somewhat more quickly. For the sake of bandwidth savings and overall faster page load times, consider using progressive images for "below the fold" and other nonessential content.