The most suitable file formats for a web site are JPEG and GIF. Using these file formats is not as easy, as it seems. And the usual question is JPEG or GIF – what file format to use?
When you’re designing for web, your images are usually 72 dpi (Dots Per Inch), which is standard for screen resolution. For most print projects, you’re going to need more than 4 times that resolution: 300 dpi. If you try and print your files at 72 dpi you will end up with blurry, fuzzy pictures, and you want the highest quality for your clients, right?
One of the most fascinating features about studying Photoshop is that you soon learn that it often provides a variety of different tools and techniques for achieving similar results. Indeed, experimenting with those techniques is often the best way of teaching yourself.
It is fair to say that few, if any, designers can claim to have mastered all of its techniques. Even the Adobe Photoshop help manual and the various third party teach yourself Photoshop books barely scratch the surface.