1. Put all your GIF images in a single directory for ease of use. These are the images to be used to create the animation.
2. Open GIMP then open the first image by pressing File and then Open and browse to your directory where they are stored.
3. Now open all the remaining GIF images in the order you want them to play using File and Open as Layers
4. Next step File then Save As making sure to rename the file so it will not overwrite the first GIF you opened. Verify that the extension is still GIF.
5. When it pops up a message box select the Animation option and adjust the interval timer making sure the check box is checked so it will set the interval time for all images.
6. Then press OK and then Export accepting defaults.
7. Then you’re done. Go click on your new animation GIF.
How to Create an Animated GIF using GIMP
1. Put all your GIF images in a single directory for ease of use. These are the images to be used to create the animation.
2. Open GIMP then open the first image by pressing File and then Open and browse to your directory where they are stored.
3. Now open all the remaining GIF images in the order you want them to play using File and Open as Layers
4. Next step File then Save As making sure to rename the file so it will not overwrite the first GIF you opened. Verify that the extension is still GIF.
5. When it pops up a message box select the Animation option and adjust the interval timer making sure the check box is checked so it will set the interval time for all images.
6. Then press OK and then Export accepting defaults.
7. Then you’re done. Go click on your new animation GIF.
Link to the GIMP windows installer download