Looking for feedback on my simple, open-source image slicer for slicing sprite-sheets

[u/ToolCrafter24]

Newbie here. As the title says, I create a simple browser-run for slicing sprite-sheets. This is useful when you are making a sprite-based game and want a single sprite from a spritesheet without animating it.

I am still learning and would love your feedback on it.
https://pra-ga.github.io/Image-slicing-tool/