MACROMEDIA FIREWORKS MX 2004-USING FIREWORKS Use Manual page 245

Blurring or sharpening detail
You can set Smoothing in the Optimize panel to help decrease the file size of JPEGs. Smoothing
blurs hard edges, which do not compress well in JPEGs. Higher numbers produce more blurring
in the exported or saved JPEG, typically creating smaller files. A smoothing setting of about 3
reduces the size of the image while still maintaining reasonable quality.
To help preserve fine edges between two colors:
•
Choose Sharpen JPEG Edges from the Optimize panel Options menu.
Use Sharpen JPEG Edges when exporting or saving JPEGs with text or fine detail to preserve
the sharpness of these areas. Choosing Sharpen JPEG Edges increases file size.
Using progressive JPEGs
Progressive JPEGs, such as interlaced GIFs and PNGs, are displayed at a low resolution initially
and then increase in quality as they download.
To export or save a progressive JPEG:
•
Choose Progressive JPEG from the Optimize panel Options menu.
Note: Some older bitmap-editing applications cannot open progressive JPEGs.
Matching a target background color
Anti-aliasing makes an object appear smoother by blending the color of an object into the
background on which it is placed. For example, if the object is black and the page on which it
rests is white, anti-aliasing adds several shades of gray to the pixels surrounding the object's border
to make a smoother transition between the black and white.
By setting the Matte option in the Optimize panel, you can anti-alias objects that lie directly
above the canvas to the Matte color. This is useful when exporting or saving graphics for
placement on web pages with colored backgrounds.
To match a target background color:
•
In the Optimize panel, select a color from the Matte pop-up menu. Match it as closely as
possible to the target background color on which the graphic will be placed.
Note: Anti-aliasing is applied only to soft-edged objects that lie directly on top of the canvas.
Optimizing in the workspace 245