With Picnik Web-Based Photo Editing Tool, image editing is fun, cool and easy. I would not suggest you an online Image Editing Tool because we have Adobe Photoshop. But there are lot more people online who do not use Adobe Photoshop and want a quick fix, quick effects for their photos. I tried out recently Picnik tool and I really liked it. No need for registration. You can register as well. Flash and ajax based interface. Very cool and smooth work flow. Marvelous quick fixes for any photo. You just upload any photo, edit it and save/share it. Save it to your PC if you like.
See the difference by yourself. I think its fun using this tool. In few seconds and clicks you can really fix any given image to a better looking state using it. Please do not mind my poor image editing. I was just randomly checking tools while creating images which you can see here. You can do better than this.