Page 158 - Web Applications (803) Class 12
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File Description
. gif The graphical file type GIF, which stands for Graphics Interchange
Format, was first made famous by CompuServe. Almost all graphics
tools, including xv, Lview, and Photoshop, can open GIF files, which
are encoded, 256-color (8-bit) images that use a lossless compression
approach.
.jpg, .jpeg, .jfif Joint Photographic Experts Group is referred to as JPEG. True colour
(16.7 million colours, or 24-bit) photographs are compressed using the
lossy JPEG compression algorithm to create JPG (or, more precisely,
JFIF) files. This implies that when files are JPEG encoded, their quality
may suffer. JPEG files can be opened and saved with numerous graphics
tools across all platforms and are substantially smaller than the majority
of other formats.
.ps, .eps, .epsi Vector graphics file formats include Postscript (PS), Encapsulated
Postscript (EPS), and Encapsulated Postscript with preview image (EPSI).
They are widely used to store printed documents.
.pdf Adobe created the Portable Document Format, or PDF. In addition to
the same text and page layout information as Postscript, PDF files can
also incorporate several WWW features including photos, links, and
heading references. Adobe Acrobat software can be used to view PDF
files.
.tif, .tiff Uncompressed true colour images are stored in TIFF (Tag Image File
Format) files. You can store TIFFs with compression in the majority of
graphics applications. Many graphics software, including XV Image
Viewer, CorelDraw and Photoshop can open these files.
.tga TGA (Targa) files are uncompressed true colour (24-bit) pictures, just as
TIFFs. Many graphics applications, such as XV Image Viewer, LView Pro
and Photoshop can open them.
.pict A PICT file is a common Macintosh image file type that, depending on
the application used to make it, can either be a raster image or a vector
picture. The majority of Macintosh applications will open them.
.bmp Windows Bitmap files are called BMP files. They are typically 8-bit
colour images with 256 colours, and many applications, like Windows
Paintbrush, can see them. The Windows desktop can have backgrounds
made from BMP files.
.pcx Picture Exchange, or PCX, is a raster image file type, which implies
that it displays images using colour pixels. A complicated structure of
points, lines, graphs, and calculations is used to create visuals in the
vector picture format, which is the other major type of image format.
A Zsoft paint file is known as a PCX. Windows Paintbrush is capable of
opening PCXs.
156 Touchpad Web Applications-XII

