--jquality
--jquality Quality
The --jquality sets the quality of the JPEG images. The Quality must be between 1 (very low quality) and 100 (best quality). The higher the quality value, the larger the JPEG file will be.
Example:
twainsave --filetype jpeg --jquality 60
Acquires to a JPEG file and set the JPEG quality factor to 60
Default Setting: The quality factor is 75.
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