Image Assets Generator

I built this tool after struggling to create dozens of icon sizes for an MS Store app I wanted to submit to the store. Most dev stores requires different dimensions, and I couldn't find a simple solution that just worked. So I made Image Assets Generator: upload one image, get all the sizes you need for MS Store, App Store, Chrome Extension or Google Play. No fuss, just the right files in the right format. I'd wanted to make it all run in-browser but came across canvas editing restrictions, and opted to run generations on the server for a more consistent UX regardless of the client. Generation happens in memory via Sharp and images are sent back as data blob urls where the client can then download them or download as zip. Please check it out and let me know how you find it.