Wallpaper:
Images used as computer wallpaper are usually
raster graphics with the same size as the display
resolution (for example 1024×768 pixels, or
1280×1024 pixels) in order to fill the whole
background. Many screen resolutions are proportional,
so an image scaled to fit in a different-sized
screen will often be the correct shape, albeit
that scaling may impact quality. PNG and JPEG
format are common. Users with widescreen (16:9
or 16:10) monitors have different aspect ratio
requirements for wallpaper, although images
designed for standard (4:3) monitors can often
be scaled or cropped to the correct shape without
loss of quality.
Wallpapers are sometimes available in double-width
versions (e.g. 2560×1024) for displaying on
multi-monitor computers, where the image appears
to fill two monitors. Digital Blasphemy is one
of the main sources for multi-monitor wallpapers.
Smaller images can be tiled (repeated) to fill
large areas, and depending on how skilfully
the wallpaper was created, the effect can look
reasonably good. However, if the join is too
obvious, or the image repeats too many times,
it will look very repetitive. |
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