Adobe will take care of optimizing the image for you by changing the colors, sharpening, contrast, shadow, blur, This will give you a file that may look like it has quality that is a little better than how it looks in your current web browsers. It will be optimized for a website that requires quality to have a good picture. Adobe Photoshop offers a feature to help improve the image to a web safe format. It will give you quality based on the content of the web page to make your image suitable for the web. You may need to try this out before you have to do any kind of image optimization work. Adobe Photoshop Elements is a free web-based image editor that can work on any kind of image.