Photoshop 6 for Windows Bible- P30:If you are reading this foreword, it probably means that you’ve purchased a copy of Adobe Photoshop , and for that I and the rest of the Photoshop team at Adobe thank you. If you own a previous edition of the Photoshop Bible, you probably know what to expect. If not, then get ready for an interesting trip. | Chapter 19 Creating Graphics for the Web 843 prepare your images. To that end the next few sections discuss the do s and don ts of Web imagery. The smaller the speedier If you have any experience with the Web you know that small images are speedy images. By small I don t mean small in physical size although that often helps . I mean small in terms of disk space. A 20K image that fills your screen takes less time to download and display than a 50K file no larger than a sticky note. It s the act of getting the data through the cables and phone lines that takes the time by comparison the time it takes your browser software to interpret the data is insignificant. Therefore this chapter emphasizes ways to control file size. How can you squish the finest graphics you re capable of creating into the smallest amount of disk space with the least amount of sacrifice This is the single most important challenge facing Web artists today. And while the Web-wide world is certain to change by the time you read this I have a sneaking suspicion that small and speedy will remain the watchwords for some time to come. Mac and PC monitor brightness Many Web artists come from a background in print media and while much of what they ve learned while preparing printed photographs is equally applicable to online artwork there are differences. Foremost among the differences you never need worry about converting images to the CMYK color space. All Web graphics are RGB or a subset of indexed colors or gray values . This is extremely good news because it means that for once in the history of electronic publishing what you see on screen is really truly what you re going to get. Well almost. Ignoring the differences in the ways people perceive colors and the variances in ambient light from one office or study to the next there are measurable differences between monitors. Some monitors produce highly accurate colors others especially older screens are entirely unreliable. But more importantly some
