Prefs tab

This tab lets you set miscellaneous options that control the behavior of VueScan.

External viewer

If this option is set, cropped and processed images will be displayed using the viewer specified in the "Viewer" option.

Viewer

If the "External viewer" option is enabled, the specified program will be started with each cropped image upon completion of a scan.

On Windows, if the viewer name is "default", the file association for this type of file will be used. You can also put command-line options after the name of the viewer (e.g. "vuepro32 /fillwindow" to display images without a window frame with VuePrint). If the name of the viewer has "%1" after it (e.g. vuepro32 "%1"), the file name will be substituted at that point. If you use the %1 argument on the comand line, be sure to put double-quotes around it, or file names that have embedded spaces won't work.

On Linux, the viewer name can have command-line options after it, and the file name will be appended to the end of the command-line before it's run.

This option isn't yet used on Mac OS. Note that the file type and file creator for the .tif, .jpg, and .bmp files are determined by the settings in the "File Exchange" control panel on Mac OS.

Window x/y offset/size

Use these options to set the window position and size. These options are updated automatically when you move the window or resize the window.

Font size (pt)

Use this option to set the font size used in VueScan. The font size is specified in points, which are basically the same as pixels on most systems.

Blink crop box

This option controls whether the crop box in the Preview tab blinks.

Add extensions

This option controls whether the TIFF, JPEG, and Index file names automatically have a .tif, .jpg, or .bmp extension added to the file name. This reduces the amount of typing needed when manually setting the output file names. No file extension will be added if the file name has a period in it.

Beep when done

Enabling this option causes a sound to be played on the computer's speakers when scanning completes. This is sometimes useful to alert you to the end of a long- running scan. On Windows, this is the "Default sound" in the "Sounds and Multimedia" control panel. On Linux, this is a simple beep. This isn't yet implemented on the Macintosh.

Get dpi from/Dpi or width

These options let you specify how to compute the dots per inch (dpi) of the cropped images. The dpi can be the same as the scanned image, can be explicitly set, or can be computed so that the width of the cropped image can be a specified number of inches, cm, or mm.

Watermark

You can optionally add a watermark (grid of lines) to output files by selecting this option. The unregistered version of VueScan always applies the watermark, but this can be turned on and off in the registered version.

Release memory

If this option is set, VueScan will release the memory buffer for the scan at the end of each scan. This is useful if you're post-processing images with an image editor and you need to free some memory.

Disk files only

If this option is set when VueScan starts, no scanners will be accessed. This is useful if you want to run multiple copies of VueScan at the same time, scanning with one copy and processing raw disk files with another copy. To use this option, put copies of VueScan in different directories, run VueScan, set this checkbox, then exit and restart VueScan.

Max bitmap (Mpix)

VueScan will reduce the in-memory image for the preview and scan to below this maximum value. You can increase this if you have lots of memory, since this will then let you zoom into the preview and scan in more detail.

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