//engtech has another greasemonkey script for assisting edubloggers and others. He also gives instructions for modifying the script to fit your own wordpress blog.
“Find Wide Images is a GreaseMonkey script for Firefox. I use it to find images that are too big and would “break” fixed width blog themes.
What it does* Warns if images are too big and will break your blog.
* Suggests dimensions for resizing images so they will fit.”
http://engtech.wordpress.com/tools/wordpress/findwideimages/
