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Graphics inserted into a Web page are called
in-line images. The two most common graphics file formats
for Web publishing are GIF (Graphics Interchange Format) and
JPEG (Joint Photographic Experts Group). All graphics-capable
browsers support these two formats. However several other
formats, like TIFF, PCX, BMP and PNG also exists.
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GIF (Graphic Interchange
Format) |
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JPEG (Joint Photographic
Experts Group) |
| GIF (Graphic
Interchange format) |
GIF format was originally designed for CompuServe
to display graphics in on-line. It is an 8-bit file format
and contains a maximum of 256 unique colors within an image.
When an image is saved in GIF format, any color that is not
one of those 256 colors is forced to become one of those 256.
Therefore, GIF is not a great option for saving photographic
images. If you have very few colors, your graphic files will
be greatly reduced in terms of their weight.
| JPEG (Joint
Photographic Expert group) |
JPEG file format allows an image to include
over 16 million colors, which is actually more than what the
human eye can see. JPEG does not reduce file size by reducing
color instead uses a reduction technique called "Lossy
Compression".
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