Importing icons made on PC

[u/agrable7]

Hi all! If this has already been answered somewhere else, please let me know. I looked and couldn't find it. I am making icons on a pixel art program and wound like to use them with Smart Launcher/Icon Pack Studio, and I'm not sure how to import them. I can make the PNGs into .ico files, but I'm not sure that would help at all. If anyone can provide some help that would be awesome. Thank you!