Imagine importing an image from one social media source of yours, manipulating it with imgix to have a different format, text added and sending it to another social media channel to spread unique outputs.
Welcome to the community @mikulabeutl!
Did you check out the Edit Image node? It offers the functionality you requested and more. Additionally is it totally free to run as it does everything locally.
Wow, made my day!
Glad to hear! Have fun!