-thumbnail

-thumbnail "xPercent yPercent"

Creates thumbnails of the images acquired by the TWAIN device.  The xPercent and yPercent denote the percentage scaling for the width and the height, respectively.  A percentage value of 100 denotes no scaling.

For example, to generate thumbnail images that are 25% of the original size of the image in both the width and height, the following command line should be used:

twainsave -thumbnail "25 25" (other options...)

Default Setting:

If -thumbnail is given with no scaling information, the default is 25% in both xPercent and yPercent. If -thumbnail is not specified, the image is not scaled.