@andreas If you either have a GPU or are patient enough to run it slowly – you should just run the stable diffusion model locally.
I recommend stable-diffusion-webui for this. It can do all the things. It’s pretty great.

https://github.com/AUTOMATIC1111/stable-diffusion-webui

If you really want to run it on somebody else’s computer, you’re looking at freemium models with limited featues and a max number of generations.
Playgroundai.com gives 1000 free generations per day, I think.
Runwayml.com is pretty nice too.