Can the thumb function be modified to use the ImageOptim API?
It would be ideal to only have to set
c::set('imageOptim.username', 'abcdef123566'); in the config.php and then the thumbnails aren’t generated on the own server anymore but over the ImageOptim API.
You can probably just use a function that returns the required URL, in the same way Kirby used imgix to generate thumbnails on the fly:
Yes, that would be an option for the “on the fly” method. I would however
like to overwrite the thumb function if that is possible to actually store
the image on my own server
That is exactly what I was looking for, thank you @texnixe!