Actually Shotwell does have this feature. When you export a photo using File->Export, Shotwell lets you specify a new width or height for the photo. Similarly, when you use Shotwell to open a single photo directly, the File->Save As command lets you specify a width or height for scaling.
Actually Shotwell does have this feature. When you export a photo using File->Export, Shotwell lets you specify a new width or height for the photo. Similarly, when you use Shotwell to open a single photo directly, the File->Save As command lets you specify a width or height for scaling.