Adobe 29180155 - Photoshop Elements 4.0 User Manual page 268

Choose JPEG from the optimization format menu.
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To optimize to a specific file size, click the arrow
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File Size. Enter a number in the Desired File Size text box, and select either Current Settings, which optimizes for the
current settings, or Auto Select GIF/JPEG, which automatically determines whether JPEG or GIF is the better
format.
Do one of the following to specify the compression level:
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Choose a quality option (Low, Medium, High, and so on) from the pop-up menu under the optimization format
•
menu.
Click the arrow on the Quality menu and drag the Quality pop-up slider.
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Enter a value between 0 and 100 in the Quality box.
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The higher the Quality setting, the more detail is preserved in the optimized image but the larger the file size. View
the optimized image at several quality settings to determine the best balance of quality and file size.
Select Progressive to display the image progressively in a web browser; that is, to display it first at a low resolution,
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and then at progressively higher resolutions as downloading proceeds.
Note: Some browsers do not support progressive JPEGs.
To preserve the ICC profile of the original image with the optimized file, select ICC Profile.
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Some browsers use ICC profiles for color correction. The ICC profile of the image depends on your current color
setting.
If the original image contains transparency, select a Matte color that matches the background of your web page.
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Transparent areas in your original image are filled with the Matte color.
To save your optimized image, click OK. In the Save Optimized As dialog box, type a file name, and click Save.
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See also
"About color management" on page 150
"About JPEG format" on page 259
To optimize as GIF or PNG-8 format
GIF is the standard format for compressing images with large areas of solid colors and crisp details like those in line
art, logos, or type. Like the GIF format, PNG-8 supports transparency and efficiently compresses areas of solid color
while preserving sharp detail; however, not all web browsers can display PNG-8 files.
In the Editor, open an image and choose File > Save For Web.
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Choose GIF or PNG-8 from the optimization format menu.
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To display an image at low resolution while the full-resolution image is downloading, select Interlaced. Interlacing
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can make downloading time seem shorter and gives viewers feedback that downloading is in progress.
Under the optimization format menu, choose a color-reduction algorithm for generating the color lookup table:
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Creates a custom color table by giving priority to colors for which the human eye has greater sensitivity.
Perceptual
Creates a color table similar to the Perceptual color table, but favoring broad areas of color and the preser-
Selective
vation of web colors. This color table usually produces images with the greatest color integrity. (Selective is the
default choice.)
to the right of the Preset menu, and then click Optimize To
ADOBE PHOTOSHOP ELEMENTS 4.0
User Guide
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