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Graphic Design for Lunch™ is a series of short video courses you can study in bite size pieces such as at lunchtime. In this course youll learn 4 Important file formats for working in Photoshop. You will learn why and when to use pdf png psd and jpg and learn to save your images in these four formats. These four formats will meet almost all your needs for working in Photoshop retaining your edits and sharing your files on the web and with others.