This tutorial explains a step-by-step workflow of preparing your photos for publishing on the web. You will need to resize your image, paying attention to its proportions; sharpen it by using the Unsharp Mask filter and finally Save for Web & Devices. Note that your photo must be saved in RGB color space (a standard [...]

To resize images in Photoshop, you first make a duplicate of the original photo, it will allow you to re-use its original size if need be. With the Image Size box opened, you can change either the pixel size or document size of the image by simply changing the numbers to the size you need.