I use Dropshare (https://dropshare.app https://dropshare.app) for images / screenshots, may be close to what you are looking for. Point it to an S3 bucket and

I use Dropshare (https://dropshare.app https://dropshare.app) for images / screenshots, may be close to what you are looking for. Point it to an S3 bucket and whenever you clip an image it puts the URL in your clipboard.