Hi there!

I created  a pro version of my spritesheet converter!

This tool allows you to convert between different formats (png, bmp, animated gif, animated png…), crop and rearrange sprite sheets, create sprite sheets and more!

It has a super fast and super intuitive UI!
You can now get it here!:

https://lion-in-a-box-games.itch.io/spritesheet-converter-pro

Source: itch.io