scanimage(1) SANE Scanner Access Now Easy scanimage(1)
scanimage - scan an image
scanimage [-d|--device-name dev] [--format format] [-i|--icc-profile profile] [-L|--list-devices] [-f|--formatted-device-list format]
[--batch [=format]] [--batch-start start] [--batch-count count] [--batch-increment increment] [--batch-double] [--accept-md5-only]
[-p|--progress] [-n|--dont-scan] [-T|--test] [-h|--help] [-v|--verbose] [-B|--buffer-size [=size]] [-V|--version] [device-specific-options]
scanimage is a command-line interface to control image acquisition devices such as flatbed scanners or cameras. The device is controlled
via command-line options. After command-line processing, scanimage normally proceeds to acquire an image. The image data is written to
standard output in one of the PNM (portable aNyMaP) formats (PBM for black-and-white images, PGM for grayscale images, and PPM for color
images) or in TIFF (black-and-white, grayscale or color). scanimage accesses image acquisition devices through the SANE (Scanner Access
Now Easy) interface and can thus support any device for which there exists a SANE backend (try apropos sane- to get a list of available
To get a list of devices:
To scan with default settings to the file image.pnm:
To scan 100x100 mm to the file image.tiff (-x and -y may not be available with all devices):
scanimage -x 100 -y 100 --format=tiff >image.tiff
To print all available options:
Parameters are separated by a blank from single-character options (e.g. -d epson) and by a "=" from multi-character options (e.g.
The -d or --device-name options must be followed by a SANE device-name like `epson:/dev/sg0' or `hp:/dev/usbscanner0'. A (partial) list of
available devices can be obtained with the --list-devices option (see below). If no device-name is specified explicitly, scanimage reads a
device-name from the environment variable SANE_DEFAULT_DEVICE. If this variable is not set, scanimage will attempt to open the first
The --format format option selects how image data is written to standard output. format can be pnm or tiff. If --format is not used, PNM
The -i or --icc-profile option is used to include an ICC profile into a TIFF file.
The -L or --list-devices option requests a (partial) list of devices that are available. The list is not complete since some devices may
be available, but are not listed in any of the configuration files (which are typically stored in directory /etc/sane.d). This is particu-
larly the case when accessing scanners through the network. If a device is not listed in a configuration file, the only way to access it
is by its full device name. You may need to consult your system administrator to find out the names of such devices.
The -f or --formatted-device-list option works similar to --list-devices, but requires a format string. scanimage replaces the placehold-
ers %d %v %m %t %i %n with the device name, vendor name, model name, scanner type, an index number and newline respectively. The command
scanimage -f " scanner number %i device %d is a %t, model %m, produced by %v "
will produce something like:
scanner number 0 device sharp:/dev/sg1 is a flatbed scanner, model JX250 SCSI, produced by SHARP
The --batch* options provide the features for scanning documents using document feeders. --batch [format] is used to specify the format of
the filename that each page will be written to. Each page is written out to a single file. If format is not specified, the default of
out%d.pnm (or out%d.tif for --format tiff) will be used. format is given as a printf style string with one integer parameter.
--batch-start start selects the page number to start naming files with. If this option is not given, the counter will start at 0.
--batch-count count specifies the number of pages to attempt to scan. If not given, scanimage will continue scanning until the scanner
returns a state other than OK. Not all scanners with document feeders signal when the ADF is empty, use this command to work around them.
With --batch-increment increment you can change the amount that the number in the filename is incremented by. Generally this is used when
you are scanning double-sided documents on a single-sided document feeder. A specific command is provided to aid this: --batch-double will
automatically set the increment to 2. --batch-prompt will ask for pressing RETURN before scanning a page. This can be used for scanning
multiple pages without an automatic document feeder.
The --accept-md5-only option only accepts user authorization requests that support MD5 security. The SANE network daemon (saned) is capable
of doing such requests. See saned(8).
The -p or --progress option requests that scanimage prints a progress counter. It shows how much image data of the current image has
already been received by scanimage (in percent).
The -n or --dont-scan option requests that scanimage only sets the options provided by the user but doesn't actually perform a scan. This
option can be used to e.g. turn off the scanner's lamp (if supported by the backend).
The -T or --test option requests that scanimage performs a few simple sanity tests to make sure the backend works as defined by the SANE
API (in particular the sane_read function is exercised by this test).
The -h or --help options request help information. The information is printed on standard output and in this case, no attempt will be made
to acquire an image.
The -v or --verbose options increase the verbosity of the operation of scanimage. The option may be specified repeatedly, each time
increasing the verbosity level.
The -B or --buffer-size changes the input buffer size from 32KB to the number kB specified or 1M.
The -V or --version option requests that scanimage prints the program and package name, the version number of the SANE distribution that it
came with and the version of the backend that it loads. Usually that's the dll backend. If more information about the version numbers of
the backends are necessary, the DEBUG variable for the dll backend can be used. Example: SANE_DEBUG_DLL=3 scanimage -L.
As you might imagine, much of the power of scanimage comes from the fact that it can control any SANE backend. Thus, the exact set of com-
mand-line options depends on the capabilities of the selected device. To see the options for a device named dev, invoke scanimage via a
command-line of the form:
scanimage --help --device-name dev
The documentation for the device-specific options printed by --help is best explained with a few examples:
-l 0..218mm 
Top-left x position of scan area.
The description above shows that option -l expects an option value in the range from 0 to 218 mm. The value in square brackets
indicates that the current option value is 0 mm. Most backends provide similar geometry options for top-left y position (-t), width
(-x) and height of scan-area (-y).
--brightness -100..100% 
Controls the brightness of the acquired image.
The description above shows that option --brightness expects an option value in the range from -100 to 100 percent. The value in
square brackets indicates that the current option value is 0 percent.
Set default values for enhancement controls.
The description above shows that option --default-enhancements has no option value. It should be thought of as having an immediate
effect at the point of the command-line at which it appears. For example, since this option resets the --brightness option, the
option-pair --brightness 50 --default-enhancements would effectively be a no-op.
--mode Lineart|Gray|Color [Gray]
Selects the scan mode (e.g., lineart or color).
The description above shows that option --mode accepts an argument that must be one of the strings Lineart, Gray, or Color. The
value in the square bracket indicates that the option is currently set to Gray. For convenience, it is legal to abbreviate the
string values as long as they remain unique. Also, the case of the spelling doesn't matter. For example, option setting --mode col
is identical to --mode Color.
Determines whether a builtin or a custom gamma-table
should be used.
The description above shows that option --custom-gamma expects either no option value, a "yes" string, or a "no" string. Specifying
the option with no value is equivalent to specifying "yes". The value in square-brackets indicates that the option is not currently
active. That is, attempting to set the option would result in an error message. The set of available options typically depends on
the settings of other options. For example, the --custom-gamma table might be active only when a grayscale or color scan-mode has
Note that the --help option is processed only after all other options have been processed. This makes it possible to see the option
settings for a particular mode by specifying the appropriate mode-options along with the --help option. For example, the command-
scanimage --help --mode color
would print the option settings that are in effect when the color-mode is selected.
Gamma-correction table. In color mode this option
equally affects the red, green, and blue channels
simultaneously (i.e., it is an intensity gamma table).
The description above shows that option --gamma-table expects zero or more values in the range 0 to 255. For example, a legal value
for this option would be "3,4,5,6,7,8,9,10,11,12". Since it's cumbersome to specify long vectors in this form, the same can be
expressed by the abbreviated form "3-12". What this means is that the first vector element is set to 3, the 9-th element is
set to 12 and the values in between are interpolated linearly. Of course, it is possible to specify multiple such linear segments.
For example, "3-3-7,10-6" is equivalent to "3,3,3,4,5,6,7,10,8,6". The program gamma4scanimage can be used to gener-
ate such gamma tables (see gamma4scanimage(1) for details).
--filename <string> [/tmp/input.ppm]
The filename of the image to be loaded.
The description above is an example of an option that takes an arbitrary string value (which happens to be a filename). Again, the
value in brackets show that the option is current set to the filename /tmp/input.ppm.
The default device-name.
This directory holds various configuration files. For details, please refer to the manual pages listed below.
This file contains lines of the form
scanimage uses this information to answer user authorization requests automatically. The file must have 0600 permissions or
stricter. You should use this file in conjunction with the --accept-md5-only option to avoid server-side attacks. The resource may
contain any character but is limited to 127 characters.
sane(7), gamma4scanimage(1), xscanimage(1), xcam(1), xsane(1), scanadf(1), sane-dll(5), sane-net(5), sane-"backendname"(5)
David Mosberger, Andreas Beck, Gordon Matzigkeit, Caskey Dickson, and many others. For questions and comments contact the sane-devel mail-
inglist (see http://www.sane-project.org/mailing-lists.html).
For vector options, the help output currently has no indication as to how many elements a vector-value should have.
10 Jul 2008 scanimage(1)