Adobe Flash Professional CC 2014 v.13.0 - Manual (Page 533)

24 bit with Alpha
(Flash Professional CS6 and earlier versions only) Optimize Colors
(Flash Professional CS6 and earlier versions only) Interlace
Smooth
(Flash Professional CS6 and earlier versions only) Dither Solids
(Flash Professional CS6 and earlier versions only) Remove Gradients
None
Ordered
Diffusion
Web 216
Adaptive
Web Snap Adaptive
Custom
for thousands of colors with transparency (32 bpc)
5. To specify appearance settings for the exported PNG, select from the following options:
Removes any unused colors from a PNG file’s color table, reducing
the file size by 1000 to 1500 bytes without affecting image quality but increasing the memory requirements slightly. Has no effect on an
adaptive palette.
Incrementally shows the exported PNG in a browser as it downloads. Lets
the user see basic graphic content before the file completely downloads and might download the file faster over a slow network connection.
Do not interlace an animated PNG file.
Applies anti-aliasing to an exported bitmap to produce a higher-quality bitmap image and improve text display quality. However,
smoothing might cause a halo of gray pixels to appear around an anti-aliased image placed on a colored background, and it increases the
PNG file size. Export an image without smoothing if a halo appears or if you’re placing a PNG transparency on a multicolored background.
Applies dithering to solid colors and gradients.
(Default is off) Converts all gradient fills in the application to
solid colors using the first color in the gradient. Gradients increase the size of a PNG and are often poor quality. To prevent unexpected
results, select the first color of your gradients carefully if you use this option.
6. (Flash Professional CS6 and earlier versions only) If you selected 8-bpc for Bit Depth, select a Dither option to specify how pixels of
available colors are mixed to simulate colors not available in the current palette. Dithering can improve color quality, but it increases file size.
Select from the following options:
Turns off dithering and replaces colors not in the basic color table with the solid color from the table that most closely approximates
the specified color. Turning dithering off can produce smaller files but unsatisfactory colors.
Provides good-quality dithering with the smallest increase in file size.
Provides the best-quality dithering but increases file size and processing time. It also works only with the Web 216-color palette
selected.
7. (Flash Professional CS6 and earlier versions only) If you selected 8-bpc for Bit Depth, select one of the following Palette Types to define
the color palette for the PNG image:
Uses the standard 216-color, web-safe palette to create the PNG image, for good image quality and the fastest processing on the
server.
Analyzes the colors in the image and creates a unique color table for the selected PNG file. Best for systems showing thousands
or millions of colors; it creates the most accurate color for the image but results in a file size larger than a PNG created with the web-safe
216-color palette.
Is the same as the Adaptive palette option except that it converts colors similar to the web-safe 216-color palette. The
resulting color palette is optimized for the image, but when possible, Flash Pro uses colors from the web-safe 216-color palette. This
produces better colors for the image when the web-safe 216-color palette is active on a 256-color system. To reduce the size of a PNG file
with an adaptive palette, use the Max Colors option to decrease the number of palette colors.
Specifies a palette that you optimized for the selected image. The custom palette is processed at the same speed as the web-safe
216-color palette. To use this option, know how to create and use custom palettes. To select a custom palette, click the Palette folder icon
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