2013

Table Of Contents
Importing and Exporting 335
but may be banded, or ERROR DIFFUSION, which creates higher quality results, but
larger files.
Color Depth
Choose the number of colors your bitmap requires. The more colors, the larger the file
(usually), and the higher the quality. The
TRUE COLOR option supports up to 16
millions colors.
TRUE COLOR + ALPHA includes semi-transparent features such as soft
shadows and transparency. For applications that support alpha-channel PNG files this
is the recommended format.
If you choose 256 colors of less, you have the option to use simple transparency
(Wine glass icon-see below). This doesn't support semi-transparent pixels, only
"on/off" fully opaque or fully transparency pixels, and so can produce jagged edges.
Max Colors
If you select a Color Depth of 256 or less you can control exactly how many colors are
used in the file. This provides a high degree of control over quality vs. file size. Just
enter the required number of colors and press the
PREVIEW button to preview.
Buttons
These buttons (except TRANSPARENT BACKGROUND) apply when exporting 256 color
images or less. These files are created with a limited palette of colors, and these
controls provide a great degree of control over those palette colors. See
COLOR
SELECTOR
above on how to select a color, or click on a color in the COLOR PALETTE).
Lock a Color
You can specify the number of colors you want in the palette of exported bitmaps.
You may want to ensure that certain colors always appear in the palette; you can lock
these colors. Click on a color to select it, then select the
LOCK button. A small square
appears in the bottom left of the color to tell you it is a locked color.
Make a Palette Color Web Safe
When clicked this button will shift the selected color to be one of the 216 common
web browser palette colors. This is a legacy system that is no longer particularly
important or relevant, as nearly all computers can display millions of colors, and
there's no benefit in restricting web graphics to only this limited palette.
Make the Image Background Transparent
Make any areas not covered by the selected objects transparent. Selecting this option
automatically makes one entry in the palette transparent.