Canon CanoScan N1240U CanoScan N670U/N676U/N1240U Toolbox3.0 for Win/Mac Guide - Page 47

File Formats - windows 10

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Appendices File Formats You can select the format of the files in which scanned images are saved by the Toolbox. This topic explains the various characteristics of the different file formats. s BMP File This is the standard Windows bitmap file format. It is supported by most Windows application programs. This format is frequently selected when an image file will only be used in a Windows environment. The ".bmp" file name extension is generally assigned to this format. Please note that this format cannot be selected in the Macintosh version of the Toolbox. s PICT File This is the standard Macintosh graphic file format. It is supported by most Macintosh application programs. This format is suitable when an image file will only be used in a Macintosh environment. Please note that this format cannot be selected in the Windows version of the Toolbox. s JPEG File This is the image format specified by the International Organization for Standardization's (ISO's) Joint Photographic Experts Group (JPEG). This format's compression ratio is its outstanding feature. It can compress data anywhere from 1/10 to 1/50 its original volume. However, it utilizes an irreversible "lossy" compression technique that loses part of the data during compression. Thus, the file cannot be restored to its w w 47 Contents Index original state and is slightly degraded in quality. If you repeatedly open, edit and save a JPEG file, the loss of quality will become more noticeable. The ".jpg" file name extension is generally assigned to this format. This format cannot be selected when the Image Type is set to Black and White. s PNG File The Portable Network Graphics (PNG) format is gradually gaining wide acceptance as an image file format for web sites (Internet). This file format is used only for black and white images. Images are saved in a compressed state, but it is a reversible compression so that the image quality remains unchanged when files are repeatedly opened, edited and saved. The ".png" file name extension is generally assigned to this format. This format cannot be selected in the Macintosh version of the Toolbox. s TIFF File The Tagged Image File Format (TIFF) features a high degree of compatibility between the various computer platforms and application programs. Data called a tag is added to the start of the file, which allows the file to be expanded. However, this characteristic sometimes causes the file to contain incompatible data. The ".tif" file name extension is generally assigned to this format. Previous View Next View Previous Page Next Page

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47
Appendices
Contents
Index
Previous View
Next View
Previous Page
Next Page
You can select the format of the files in which scanned
images are saved by the Toolbox. This topic explains the
various characteristics of the different file formats.
■
BMP File
This is the standard Windows bitmap file format. It is
supported by most Windows application programs. This
format is frequently selected when an image file will only
be used in a Windows environment. The “.bmp” file name
extension is generally assigned to this format. Please note
that this format cannot be selected in the Macintosh
version of the Toolbox.
■
PICT File
This is the standard Macintosh graphic file format. It is
supported by most Macintosh application programs. This
format is suitable when an image file will only be used in
a Macintosh environment. Please note that this format
cannot be selected in the Windows version of the Toolbox.
■
JPEG File
This is the image format specified by the International
Organization for Standardization’s (ISO’s) Joint
Photographic Experts Group (JPEG). This format’s
compression ratio is its outstanding feature. It can
compress data anywhere from 1/10 to 1/50 its original
volume. However, it utilizes an irreversible “lossy”
compression technique that loses part of the data during
compression. Thus, the file cannot be restored to its
File Formats
original state and is slightly degraded in quality. If you
repeatedly open, edit and save a JPEG file, the loss of
quality will become more noticeable. The “.jpg” file name
extension is generally assigned to this format. This format
cannot be selected when the Image Type is set to Black
and White.
■
PNG File
The Portable Network Graphics (PNG) format is gradually
gaining wide acceptance as an image file format for web
sites (Internet). This file format is used only for black and
white images. Images are saved in a compressed state, but
it is a reversible compression so that the image quality
remains unchanged when files are repeatedly opened,
edited and saved. The “.png” file name extension is
generally assigned to this format. This format cannot be
selected in the Macintosh version of the Toolbox.
■
TIFF File
The Tagged Image File Format (TIFF) features a high
degree of compatibility between the various computer
platforms and application programs. Data called a tag is
added to the start of the file, which allows the file to be
expanded. However, this characteristic sometimes causes
the file to contain incompatible data. The “.tif” file name
extension is generally assigned to this format.