Preferably I'm looking for a free one that supports these functions:
- Improved colorization (Like turning grey into red, something I can't do with GM's image editor)
- Handling transparent backgrounds and erasing background colors
- Improved resizing and anti-aliasing
- A bigger palette (supporting colors like orange and purple)
- Being able to preview it as an animation and save as .png strips (and load those strips to create an animation of subimages)
- A strip creator (for cutting large images into equally sized blocks)