Add effects to animated gifs
You can also use: http://ezgif.com/effects?url=http://link/to/image.gif
Change image colors
Convert GIF image colors to grayscale, sepia, and monochrome using built in presets, modify hue, saturation and brightness.
Transform, rotate, and reverse gifs
These options allow you to flip an image both horizontally and vertically, creating a mirrored image effect.
You can also rotate an image by a freely chosen angle, reverse the GIF or change the number of times to play (loop count). You can add second counter to GIF to give viewer better understanding about animation timeline.
Replace color with transparency
Replaces any color You specify with transparency. Especially useful when You need to remove white or black backgrounds from animated gifs.
Apply Instagram-like filters to your animated gifs. Gotham, Lomo, Toaster, and Nashville effects.