Adobe GOLIVE CS2, Руководство пользователя, Страница: 379 / 724

370 ADOBE GOLIVE CS2
User Guide
SWF
The Macromedia® Flash™ (SWF) file format is a vector-based graphics file format for the creation of scalable, compact
graphics for the web. Since the file format is vector-based, the artwork maintains its image quality at any resolution
and is ideal for the creation of animation frames. (See “Setting optimization options for SVG and SWF files” on
page 382.)
SVG
SVG is a vector format that describes images as shapes, paths, text, and filter effects. The resulting files are compact
and provide high-quality graphics on the web, in print, and even on resource-constrained, handheld devices. (See
“Setting optimization options for SVG and SWF files” on page 382.)
WBMP
WBMP format is the standard format for optimizing images for mobile devices, such as cell phones. WBMP supports
1-bit color, which means that WBMP images contain only black and white pixels. (See “Optimization options for
WBMP format” on page 374.)
See also
“To optimize and save web graphics” on page 365
Optimization options for GIF and PNG-8 formats
A
B
C
Optimization settings for GIF
A.
File format menu
B.
Color Reduction Algorithm menu
C.
Dithering Algorithm menu
Lossy (GIF only)
Reduces file size by selectively discarding data. A higher Lossy setting results in more data being
discarded. You can often apply a Lossy value of 5–10, and sometimes up to 50, without degrading the image. File size
can often be reduced 5%–40% using the Lossy option.
Note:
You cannot use the Lossy option with the Interlaced option or with Noise or Pattern Dither algorithms.
Color Reduction Method and Colors Specifies a method for generating the color lookup table and the number of
colors you want in it. You can select one of the following color reduction methods:
•
Perceptual
Creates a custom color table by giving priority to colors for which the human eye has greater sensi­
tivity.
•
Selective
Creates a color table similar to the Perceptual color table, but favoring broad areas of color and the
preservation of web colors. This color table usually produces images with the greatest color integrity. Selective is the
default option.
• Adaptive
Creates a custom color table by sampling colors from the spectrum appearing most commonly in the
image. For example, an image with only the colors green and blue produces a color table made primarily of greens
and blues. Most images concentrate colors in particular areas of the spectrum.