when you upload your image on that page : https://eclipse.letscook.wtf/launch
you will go thru the following :


would it be possible to :
- Give some partners website where you can resize your image proper?
- Automatically resize the image on uploading it
The short term solution could be to give some partners solution existing so user can fix it quickly
Why? Because it can be frustrating google and search for an app that can resize your image ... and user can finish giving up the launch or .... "i 'll do it tomorrow" syndrom....