Image file safety


I have following use case:

  • user uploads images through image uploader to his/her personal collage board. No one else should see / have access to these files.
  • perfect solution would be to set these files as private, but private files cannot have imgix processing, so the whole collage is ruined (i need picture to fill image uploader with crop). I tried saving this file already with imgix processing, but it saved the original file anyway.
  • i tried to use CSS to overwrite some elements, but that doesn’t work so well.

So I came to my main question, if I don’t set that these files are private, but properly configure each place where images are used, how safe are these files? From other users and outside world.

Is it the same logic and safety as ?