ImageMagick

ImageMagick is a very useful suite of command-line tools for manipulating images.

It may seem odd to work on images without seeing them on-screen at the time, but when you have a lot of files that all need identical treatment it is very much easier than using a GUI like Photoshop or The Gimp.

I use ImageMagick's mogrify command to resize images for the web and reduce the JPEG quality at the same time:

    mogrify -geometry 700x600 -quality 70 -comment '(c) Andrew Findlay 2006' mypic.jpg

ImageMagick is free software, and is available for both Unix and Windows. See the ImageMagick website for further details.

-- AndrewFindlay - 25 May 2006