If you need to edit your GIFs for whatever reason, say resize an animated GIF to use as an avatar or browser throbber, there are two ways to do it. One is to download software and do it all yourself. The other is to upload it and have it done for you!
shot1.gif GIFWorks is completely free and instant! You can perform a number of tasks which would suit most users needs. OK its not photoshop but it is free and easy.
The effects it offers can be seen in the screenshot.
To upload a GIF for editing, just click on ‘File’ then ‘Open Image’ this will then allow you to upload a GIF from a remote location or from your hard drive.
shot4.gif
Once you have finished editing your GIF just right click on it and choose ‘Save Picture As’ , select the download location and that’s it.
GIFWorks - Free Online GIF Editor 
