To go full aws on this: - lambda vending s3 pre signed urls with put only permissions - a static page with 20 lines of js that requests one of those urls and

To go full aws on this: - lambda vending s3 pre signed urls with put only permissions - a static page with 20 lines of js that requests one of those urls and does the put I’m not aware of any existing solutions, but your problem seems simple enough that you could roll a solution yourself