Picasion is an online tool to create animated gif images.Picasion help you to create Gif images through few mouse clicks and no sign up is requried for creating images.
You can upload images from your hard drive and grab images directly from Picasa Web or Flickr. Just enter a Picasa Web or Flickr username and/or tag to see the list of pictures you can import to your animation. At the max 10 images can be used to create the Gif file.
Picasion provide simple options you can choose the size of the animation and you can select the frames speed in your animation.