If you'd like to make an animated GIF but don't want mess around with downloading software, GifNinja is a web-based application for converting images and video into animated GIFs. GifNinja will turn a series of five uploaded images or a four second long video clip into an animated GIF—four seconds isn't a set cap, but the GifNinja FAQ suggests it to keep the GIF files under the file size limitations of popular social networking sites. You can adjust the speed of your animation for the effect you desire, don't worry too much about the initial adjustment you'll be able to refine it after seeing how the speed looks with the actual images you've uploaded. Once you've finished tweaking the speed, you have the option of making the picture available to the public for viewing and rating or simply downloading the file without the public display. Alternately you can upload an existing animated GIF and have GifNinja break it apart into the separate frames which can be viewed immediately or downloaded in a zip file. The service is free and there are no watermarks or alterations made to your image.