Adobe 13102498 User Guide - Page 536

PHOTOSHOP CS3 529 User Guide The white areas of the mask (which include type or shapes on shape layers) indicate the image areas that will have the highest level of image quality. The black areas are the least important parts of the image and will have lower JPEG quality, or the higher dithering and lossiness for GIF images. The level of optimization in gray areas of the mask varies depending on the gray level. For generated color tables, the white areas of the mask indicate important image areas, so more colors in the white areas are kept. 1 In the Save For Web & Devices dialog box, click the Mask button next to an option. For example, Quality for JPEG images or Lossy for GIF images. 2 In the dialog box that appears, choose the mask that you want to apply. All the image text layers, all the image shape layers, or an alpha channel. You can choose more than one mask. A thumbnail of the mask appears in the lower right of the dialog box. 3 Use the sliders to modify quality, lossiness, or dithering, or enter minimum or maximum values for the setting in the text boxes. The white slider affects the white areas of the mask and the black slider affects the black areas of the mask. Areas of the mask that are gray are partially affected so that the transition between areas is less abrupt. Note: For the Lossy setting, a higher number actually means greater compression, as opposed to greater quality (as in most other settings). Preview optimized images in a web browser You can preview an optimized image in any web browser installed on your system from the Save For Web & Devices dialog box (File > Save For Web & Devices). The browser preview displays the image with a caption listing the image's file type, pixel dimensions, file size, compression specifications, and other HTML information. • To preview an image in your default web browser, click the browser icon at the bottom of the Save For Web & Devices dialog box. • To select a different browser, select Other from the browser pop-up menu (next to the browser icon). • To add, edit, or remove a browser in the browser pop-up menu, select Edit List from the browser pop-up menu. In the Browsers dialog box, you can find all browsers on your computer and set the default browser to preview your image. Save a file to e-mail 1 Open the image in Photoshop, and choose File > Save For Web & Devices. 2 Click the Optimized tab at the top of the Save For Web & Devices dialog box. 3 Choose JPEG Low from the Preset menu. 4 Click the Image Size tab. 5 Make sure that Constrain Proportions is selected and enter a width. For e-mail, 400 pixels is a good size. Use a smaller size if your recipient has a slow Internet connection. 6 Click Save. Enter a file name and location in which to save the file. Under Format, make sure that Images Only is selected. Click Save. Now you are ready to e-mail the file. In some e-mail programs, you can drag the file into the body of the message. In other programs, you use the Attach or Insert command.