How to Optimize Amazon S3 Images via ShortPixel Global CDN (Serve Faster & Reduce Costs)

Serving images directly from Amazon S3 is inefficient because S3 delivers uncompressed, full-resolution originals without format conversion or resizing, leading to high bandwidth costs. By placing an image-optimizing CDN like ShortPixel between S3 and users, images are automatically resized, compressed, and converted to modern formats via URL parameters, typically reducing payloads by 40–80%. The setup requires connecting an S3 bucket to ShortPixel's dashboard and rewriting image URLs to include optimization instructions.