CHAPTER 8: ALL FOR THE WEB 269
3. Drag the slider or enter a value in
Quality
, or use
Compress by Size
to
compress the image to a specific file size or ratio. Higher compression levels
lead to lower image quality.
4. Click
Matte
on the
Mask Options
tab to select a background color. The matte
color will also fill the transparent pixel area if the image already has a mask, or
you select one from
Mask
.
5. Click
Save As
.
Notes:
• Unlike GIF and PNG, the JPEG file format does not support transparent
backgrounds. The background remains white when selecting None or White as
the matte.
• To display a matte color directly, use non-rectangular objects for optimization.
However, you can still display a matte color in rectangular images by selecting
Pick Color
from the Mask list. Next, click
Add to Mask
and then click an image
area as a mask. Finally, choose a matte from the Matte list.
Optimizing an image as a GIF
GIF Image Optimizer
saves files as GIF images with the transparent option. You
can also assign a mask or matte to it. Because GIFs support maximum 256 (8-bit)
colors, it is more suitable for line art or text than for photorealistic images.
To optimize an image as a GIF:
1. Select
Web: Image Optimizer
. If objects have been selected, decide how to
save these objects for optimization.
2. Click
GIF Image Optimizer
.
3. Select a color palette from
Preset
in the
GIF Options
tab. Customize it further
with options such as number of colors.
4. Click
Transparency
or
Matte
(depicted as an arrow) in the Mask Options tab
to select a background color. The transparent background displays an object
that merges with the Web background smoothly on a Web page. The matte
color will also fill the transparent pixel area if the image already has a mask, or
you select one from Mask.
Notes:
• Although making a background transparent means that it will not show on a
Web page, try to crop the image (using
Crop
) as close as possible to reduce the
file size.
• Using
Compress by Size
compresses the image to a specific file size or ratio.
5. Modify the current palette in the
Palette
tab as needed. For example:
• To modify a color, click a color cell, then click
Palette menu
to select a
command.
Summary of Contents for PHOTOIMPACT 11
Page 1: ...User Guide Ulead Systems Inc August 2005 ...
Page 295: ...9 Appendix COMMANDS ...