You're right it's better to include some space between frames so they're not directly touching to avoid sprite bleeding issues. However this wasn't my choice. LimeZu created the Spritesheets and he placed each frame right next to each other. My tool only overlays the spritesheets on top of each other and crops them. My suggestion is unless having each frame touch is directly causing issues, don't change it. If it is an issue then I'm sure there are tools out there that can automatically add padding around each frame for you by inputting the rows and columns count along with the size of each frame. I tried looking for one for you just now but wasn't able to immediately find anything. I'm sure with a little more digging you'd find a tool.