As I make quite a few custom websites, I often had to go online to find a tool to convert images to other file formats such as webp of avif and I ran in to free tier limitations too.
As we're all about skipping the manual work, I figured I build a tool for myself. It's mainly meant for CLI but also has a web interface for those who like it.
It also has a skill file, so your agents can learn how to use it.