Source-directory must contain one or more jpeg files with the .jpg extension. Only files with the .jpg extension will be processed. Jpeg files will be processed in alphabetical order. If scale-factor is less than 1, the jpeg images will be reduced. If scale-factor is more than 1, the jpeg images will be increased.
Gallery calls pnmscale to rescale.
This involves decompressing and then recompressing the jpeg image, which is a lossy process. Use this if the default thumbnail size of 150 pixels does not suit you. This option allows you to customise the way your webpages look by replacing the default html code with your own html code. This is explained further below. Ftp output to a remote host, using ncftpput.