Images, audio & video
For any fans of Photoshop this is such an excellent site to use. If you have ever wanted the functionality of image manipulation, cropping, merging - the usual things you would like to use out and about - then this tool is highly recommended.
Cameras, phones and various media devices often record media in a range of formats. This video converter lets you change your file types to be able to make use of them in the format you need.