SpritePlane is a great plugin for Photoshop to convert .GIF files into sprite sheets with just a few clicks!
It converts GIFs like 
to 
You can find all the information, instructions and download link on the SpritePlane GitHub page.
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Akaroa Panorama 01
A panorama picture taken on my way to Akaroa in New Zealand
Also, check out spritestoolbox.com. The design isn’t great, but it works better than all the other online tools