Adobe photoshop elements User Manual

ADOBE PHOTOSHOP ELEMENTS

To create an enhanced JPEG with a slightly 

smaller file size, select Optimized. The Optimized 
JPEG format is recommended for maximum file 
compression; however, some older browsers do 
not support this feature.

Select Progressive to create an image that 

displays progressively in a Web browser. The image 
will display as a series of overlays, enabling viewers 
to see a low-resolution version of the image before 
it downloads completely.

Progressive JPEGs require more RAM for viewing, 
and are not supported by some browsers.

To preserve the ICC profile of the image with 

the file, select ICC Profile. 

ICC profiles are used by some browsers for color 
correction. The ICC profile preserved depends on 
your current color setting. (See “Using color 
management” on page 65.)

If the original image contains transparency, 

select a Matte color that matches the background 
of your Web page. (See “Making transparent and 
matted images” on page 233.)

GIF is the standard format for compressing images 
with flat color and crisp detail, such as line art, 
logos, or illustrations with type. (See “About GIF 
format” on page 228.) Like the GIF format, PNG-8 

efficiently compresses solid areas of color while 
preserving sharp detail; however, not all Web 
browsers can display PNG-8 files. (See “About 
PNG-8 format” on page 229.)

GIF format and PNG-8 format can use up to 256 
colors to describe an image. The process of deter-
mining which colors to use is called indexing 
(which is why images in GIF and PNG-8 formats 
are sometimes called indexed color images). To 
convert an image to indexed color, Photoshop 
Elements builds a color lookup table, which stores 
and indexes the colors in the image. If a color in 
the original image does not appear in the color 
lookup table, the program chooses the closest one 
or simulates the color using available colors.

Choose GIF or PNG-8 for the optimization 

format.

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