Adobe photoshop elements User Manual

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ADOBE PHOTOSHOP ELEMENTS
User Guide
but can also increase the file size. For optimal 
compression, use the lowest percentage of 
application dither that provides the color detail 
you require.
Previewing browser dither 
You can preview browser dither directly in 
Photoshop Elements or in a browser that uses an 
8-bit color display (256-color mode). 
To preview browser dither:
Choose Browser Dither from the document panel 
menu in the Save For Web dialog box. (To view the 
menu, click on the triangle near the upper right 
corner of the document panel.)
To preview browser dither in a browser:
1
Set your computer’s color display to 8-bit color 
(256 colors). See your computer operating 
system’s documentation for information on 
changing the color display.
2
Select a browser from the Preview pop-up 
menu in the Save For Web dialog box. 
Minimizing browser dither
Using colors in the Web palette ensures that colors 
won’t dither when displayed in browsers on either 
Windows or Macintosh operating systems capable 
of displaying at least 256 colors. When creating an 
original image, you can use the color picker to 
choose Web-safe colors. (See “Using Web-safe 
colors” on page 78.)
Creating and applying custom dither 
patterns
You can use the DitherBox
 filter to create a 
custom dither pattern for a selected RGB color. 
You can then fill a selection or a layer in an image 
with the dither pattern regardless of the RGB 
colors within the selection. You can save custom 
dither patterns in groups called collections, and use 
the dither patterns with other images.
To create and apply a custom dither pattern:
1
With an image displayed in the document 
window, use the eyedropper tool (
) to select a 
foreground color that you want to simulate with a 
customized dither pattern. (The foreground color 
becomes the basis for the custom dither pattern in 
DitherBox
.)
Note: You create custom dither patterns while in the 
main Photoshop Elements work area (not in the 
Save For Web dialog box). Make sure the image is in 
RGB color mode. 
2
Use the selection tools or the Layers palette to 
select an area or a layer in the image that you want 
to fill with the custom dither pattern.
3
Choose Filter > Other > DitherBox, or use the 
Filters palette to apply the DitherBox filter.
The RGB swatch in the DitherBox dialog box 
displays the current foreground color. To choose 
another RGB color on which to base the dither 
pattern, click the RGB swatch, select a new color in 
the color picker, and then press the Arrow 
button ( ) to transfer it to the pattern box.