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Bitmap
This is a common graphics format used by some operating systems to store digital raster images. It can be likened to a map of bits, hence the name, as the image is made up of a number of individual dots (bits). Usually, the term bitmap refers to an uncompressed image stored as one bit per pixel.
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There are also pixmaps which are used to store digital images that contain multiple bits per pixel.
The file extension normally used by the Windows® and OS/2 operating systems for standard bitmap files is .bmp. Other file formats for literal bitmaps include:
- InterLeaved Bitmap (ILBM)
- Portable Bitmap (PBM)
- Wireless Application Protocol Bitmap (WBMP)
- X Bitmap (XBM)
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Bitmap files can get very large in filesize (i.e. kilobytes) and if storage space is a factor then it is best to convert the image into a more compressed format, such as JPEG.
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