Resizing also helps reduce costs. The latest phones can generate ridiculously large images with 200+ megapixels. You really don't want to dump that kind of behe

Resizing also helps reduce costs. The latest phones can generate ridiculously large images with 200+ megapixels. You really don't want to dump that kind of behemoth in your S3 bucket and serve it as somebody's profile pic. Videos will add even more to your AWS bill if you're not careful. Re-encode that 4K cat video as soon as it comes in, or wire up a CDN to do it for you.