Currently, only GIF
and JPEG formats are fully supported by browsers. A third alternative, the PNG
graphics format, has experienced a growing acceptance and, with the release of
Internet Explorer 7, may have finally arrived.
You need to understand the uses and limitations of these formats to apply them
successfully in Dreamweaver. The following sections look at the fundamentals.
301
IN THIS CHAPTER
Examining image file formats
Working with foreground and
background images
Inserting images from the
Assets panel
Dreamweaver Technique:
Including Images
Revising graphics
Dreamweaver Technique:
Changing Graphics
Modifying image height, width,
and margins
Aligning and wrapping text
around images
Dividing your page with
HTML lines
Putting graphics into motion
Adding rollovers
Inserting navigational buttons
Inserting Images
GIF
The Graphics Interchange Format (GIF) was developed by CompuServe in the late 1980s to address the
problem of cross-platform compatibility. With GIF viewers available for every system from PC and
Macintosh to Amiga and NeXT, the GIF format became a natural choice for an inline (adjacent to text)
image graphic. GIFs are bitmapped images, which means that each pixel is given or mapped to a specific
color. You can have up to 256 colors for a GIF graphic.
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